If you’re looking for the best baby milestone journals to cherish every first moment, I’ve found a variety of beautiful options. From keepsake albums with durable materials and thoughtful layouts to books that include pockets for mementos, there’s something to suit every style. Whether you want a modern design or a more whimsical look, these journals help you document milestones, photos, and memories easily. Keep exploring to discover the perfect one for your family journey.
Key Takeaways
- Features various layouts, prompts, and photo slots to effectively document baby’s milestones and special moments.
- Made from high-quality, durable, and eco-friendly materials like linen, hardcover, or faux leather for long-lasting keepsakes.
- Includes keepsake pockets, envelopes, or folders to store mementos like hospital bands or hair locks.
- Designed with attractive, gender-neutral aesthetics such as whimsical illustrations, star patterns, and neutral tones.
- Offers a range of sizes, finishes, and premium packaging options suitable for gifting and display.
Baby Inkless Milestone Cards Photo Album

If you’re looking for a heartfelt way to preserve your baby’s early moments, the Baby Inkless Milestone Cards Photo Album is an ideal choice. I love how it showcases both footprints and milestone photos, creating a meaningful keepsake. With 16 pages holding up to 32 photos, it’s perfect for organizing memories by category or milestone. The lightweight design and high-quality, eco-friendly materials guarantee durability while keeping it easy to handle. Plus, it’s compatible with photo cards, stickers, or adhesive dots, making arranging memories simple. Whether for yourself or as a gift, this album helps you beautifully document your baby’s growth story.
Best For: parents and grandparents seeking a charming, organized way to preserve and showcase their baby’s milestones and footprints in a durable, high-quality photo album.
Pros:
- Combines footprints and photos for a personalized keepsake that captures precious memories.
- Made from eco-friendly materials, ensuring durability and safety for long-term preservation.
- Spacious design with 16 pages holding up to 32 photos, allowing easy categorization and display.
Cons:
- Limited to 16 pages, which may require additional albums for extensive memory collections.
- Size (6.3L x 0.78W x 7.87H inches) might be too small for larger prints or multiple photos per page.
- Primarily designed for photo cards and stickers, which may require additional supplies for perfect placement.
Baby Memory Book for Boy or Girl

The Baby Memory Book for Boy or Girl by BYPA is the perfect keepsake for parents who want a gender-neutral way to document their child’s first five years. Its elegant design features high-quality materials, thick pages, and a sturdy spiral binding that makes it durable and easy to use. With 132 pages, plenty of photo slots, and dedicated sections for milestones, family trees, and personal notes, it offers a all-encompassing way to preserve memories. The soft, fairytale animal illustrations and neutral colors make it suitable for any baby. Plus, its thoughtful features, like keepsake pockets and customization options, turn it into a treasured heirloom for years to come.
Best For: parents, grandparents, and family members seeking a beautiful, gender-neutral keepsake to document a child’s first five years with ease and elegance.
Pros:
- High-quality materials with thick, durable pages and a sturdy spiral binding for long-lasting use.
- Elegant, gender-neutral design featuring soft colors and charming animal illustrations suitable for boys or girls.
- Thoughtfully designed with space for photos, milestones, keepsakes, and personal notes, making memory preservation comprehensive yet manageable.
Cons:
- Ribbon pull-tab inside the packaging may require reinforcement with glue or staples to secure properly.
- Limited customization options beyond the included sections and keepsake pockets.
- The 30-day return policy might be restrictive for some buyers after purchase.
Pregnancy Journal & Planner for Moms

A Pregnancy Journal & Planner by Slate & Pine is perfect for moms who want a stylish, all-in-one keepsake that combines practical planning with heartfelt memory keeping. Its elegant hardcover with faux leather and linen-like texture feels durable yet refined, making it a beautiful gift or lifelong memento. With customizable weekly and monthly calendars, trimester-specific tabs, and dedicated sections for ultrasound photos, cravings, and milestones, it helps me stay organized and reflect on every stage. The journal’s prompts inspire me to capture my thoughts and feelings, creating a meaningful record of my pregnancy journey. It’s a thoughtful, stylish tool to cherish these special moments forever.
Best For: expecting mothers seeking a stylish, comprehensive pregnancy journal that combines practical planning with heartfelt memory keeping.
Pros:
- Elegant hardcover with durable faux leather and linen-like texture, suitable as a gift or keepsake
- Customizable undated weekly and monthly calendars, plus trimester-specific tabs for organization
- Prompts and dedicated pages for ultrasound photos, milestones, and personal reflections, enhancing personalization
Cons:
- Paper may be crunchy and prone to creases or ink transfer issues
- Slight quality control concerns such as embedded debris or inconsistent page quality
- Relatively heavy weight (around 2.38 pounds), which may be less portable for some users
Baby Memory Book for Newborns and Toddlers

For new parents and family members looking for a meaningful keepsake, the Baby Memory Book for Newborns and Toddlers offers a sleek, modern design that’s both stylish and functional. With clean white pages, black ink, and hand-sketched leaf accents, it’s minimalist yet elegant. The customizable cover allows you to add a baby photo, footprint, or handprint, making it uniquely personal. It features 60 durable pages with prompts for milestones, notes, and photos from pre-birth through age five. This versatile book is perfect for documenting memories, and its contemporary style makes it an ideal gift for baby showers or family keepsakes.
Best For: new parents, family members, and friends seeking a stylish, customizable keepsake to document a child’s early years from birth to age five.
Pros:
- Elegant minimalist design with durable thick paper and high-quality cover.
- Extensive prompts and space for photos, notes, and milestones up to age five.
- Customizable cover for a personalized touch, making it a meaningful gift.
Cons:
- Slightly tight binding when fully filled, which may limit the number of photos and entries.
- The spine could be thicker to better support numerous pages and prevent wear.
- Some users find the size and weight (approximately 1.74 pounds) less portable for on-the-go use.
Keepsake Memory Book for Baby (Birth to Age 5)

Designed with busy parents in mind, the Keepsake Memory Book for Baby (Birth to Age 5) offers a durable, elegant way to document your child’s early years. With 120 gender-neutral pages, a modern woodland theme, and luxurious gold foil accents, it’s as beautiful as it is practical. The sturdy hardcover and lay-flat spiral binding make it easy to use, while high-quality, archival-grade paper guarantees lasting keepsakes. It includes six folders for mementos and a protective sleeve, making it perfect for gifts or personal keepsakes. Whether you spend five minutes weekly or more, this book helps you capture milestones, memories, and special moments for years to come.
Best For: parents, new families, and gift buyers seeking a durable, elegant, and inclusive way to preserve their child’s early childhood memories from birth to age 5.
Pros:
- High-quality, archival-grade thick paper ensures longevity and prevents bleed-through.
- Elegant design with a modern woodland theme, gold foil accents, and sturdy hardcover for a luxurious feel.
- Includes six keepsake folders and a protective sleeve, making it ideal for storing mementos and gifts.
Cons:
- The book’s size (9.75” x 9.25”) may be bulky for some parents to handle or store easily.
- The detailed prompts and layout may require more than five minutes weekly for those with very busy schedules.
- The price point may be higher than simpler memory books, reflecting its premium materials and design.
First 5 Years Baby Memory Book for Boys and Girls

If you’re looking for a stylish and inclusive keepsake to capture your child’s first five years, this Baby Memory Book is an excellent choice. It features 90 pages with prompts that make recording milestones and special moments easy and enjoyable. The whimsical Wonderland characters and adventure-themed illustrations keep children engaged, while the story-like scrapbook format highlights their journey. Its modern, minimalist design with a star pattern and durable hardcover makes it both functional and attractive. Plus, it includes a keepsake envelope for storing mementos like hair locks or hospital bands. Perfect for families wanting a meaningful, versatile way to preserve memories for years to come.
Best For: new parents, grandparents, and families seeking a stylish, inclusive keepsake to document their child’s first five years with meaningful prompts and engaging illustrations.
Pros:
- High-quality, thick paper resistant to tearing, ensuring durability over time.
- Beautiful whimsical illustrations and modern minimalist design make it a stylish keepsake.
- Includes a keepsake envelope for storing special mementos, enhancing the memory-keeping experience.
Cons:
- Filling with many photos may cause the pages to bulge slightly.
- Some prompts may feel repetitive but can be customized or omitted.
- Slightly larger and heavier than standard notebooks, which may affect portability.
Keepsake Baby Memory Book for Birth to 5 Years

The Keepsake Baby Memory Book for Birth to 5 Years is an ideal choice for parents and families wanting to preserve their child’s most cherished milestones in a stylish, easy-to-use format. Made of high-quality linen with a modern design, it features a durable hard cover ring binder and 185 pages for photos, stories, and notes. With adorable illustrations, quotes, and guided prompts, it simplifies recording everything from ultrasound images to preschool moments. The gender-neutral style makes it perfect for any baby, and the back pocket holds keepsakes like hospital bands. This beautiful, practical book helps you create a lasting keepsake to cherish for years to come.
Best For: parents, family members, or friends seeking a timeless, stylish keepsake to document a child’s first five years with photos, milestones, and personal notes.
Pros:
- High-quality linen material with a durable hard cover ring binder for lasting use
- Ample space with 185 pages, guided prompts, and a back pocket for keepsakes and small mementos
- Gender-neutral design suitable for both boys and girls, making it a versatile gift option
Cons:
- Pages are primarily optimized for landscape photos, which may limit compatibility with portrait-oriented images
- Slightly compact size might feel limited for those wanting extensive space for additional memorabilia
- Some users may prefer more specific themed prompts or additional customization options
Keepsake Baby Memory Book for Boys & Girls

A Keepsake Baby Memory Book for Boys & Girls is the perfect choice for parents who want to preserve their child’s early years in a meaningful, organized way. With 100 beautifully designed pages featuring woodland animals, quotes, and prompts, it captures milestones from pre-birth to age five. Made of high-quality paper and housed in a durable ring binder, it includes space for ultrasound images, birth stories, and firsts like smiles, holidays, and birthdays. The gender-neutral design makes it versatile for any baby, and the back pocket allows for keepsakes like hospital bands and drawings. It’s a heartfelt gift that creates a lasting memory of those precious childhood moments.
Best For: parents, grandparents, or gift-givers seeking a beautiful, organized keepsake to preserve a child’s milestones from birth through age five.
Pros:
- Features 100 thoughtfully designed pages with woodland animal illustrations, quotes, and prompts for easy documentation.
- Made of high-quality paper within a durable hard cover ring binder, ensuring longevity and easy page removal if needed.
- Gender-neutral design and ample space for photos, stories, and keepsakes make it versatile and suitable for any baby.
Cons:
- Some users have noted that the paper quality could be improved for durability.
- The size (approximately 9.45 x 9.2 inches) may be bulky for some storage spaces.
- As a pre-assembled product, it may lack customization options for personal preferences.
Keepsake Baby Memory Book for Kids from Birth to Age 5

Designed for parents who want a timeless keepsake, the Keepsake Baby Memory Book from Birth to Age 5 offers a beautiful, gender-neutral design with a sage green linen cover and elegant gold lettering. This high-quality binder features 94 pages filled with prompts, quotes, and space for photos, stories, and personal notes. It guides you through milestones from pregnancy to age five, including firsts, family details, and special memories. The durable pages hold photos well, and the back pocket stores keepsakes like hospital wristbands or drawings. Its classic style and thoughtful layout make it a meaningful heirloom, perfect for preserving your child’s early years.
Best For: parents seeking a high-quality, timeless keepsake to document their child’s milestones from birth to age 5 in a gender-neutral, elegant design.
Pros:
- Elegant, minimalist design with durable linen cover and high-quality paper.
- Thoughtfully organized prompts and space for photos, stories, and keepsakes.
- Versatile and easy to personalize, making it a meaningful heirloom for families.
Cons:
- Some users wish for more blank pages or customizable holiday sections.
- The design, while timeless, may be less suitable for those preferring more colorful or themed books.
- Slightly larger size may be less convenient for portability or fitting in small spaces.
Urban Kiddy My First Adventure Baby Photo Album

If you’re looking for a safe and durable way to preserve your baby’s early memories, Urban Kiddy’s My First Adventure Baby Photo Album is an excellent choice. Designed for newborns and toddlers, it holds up to 10 4×6-inch photos, making it easy to capture milestones and special moments. Crafted from baby-safe, durable fabric, it guarantees your memories stay protected over the years. Its colorful, unique design makes it a perfect gift for baby showers or birthdays, and it also encourages early cognitive and emotional development. With this album, you’ll have a lasting keepsake that celebrates your child’s first adventures in style and safety.
Best For: parents, grandparents, or caregivers looking for a safe, durable, and adorable keepsake to preserve their child’s early memories and milestones.
Pros:
- Soft, baby-safe fabric makes it safe for newborns and toddlers.
- Holds up to 10 photos, perfect for capturing key moments in your child’s first years.
- Colorful and unique design makes it an attractive gift for special occasions.
Cons:
- Limited to 10 photos, which may not accommodate extensive collections of memories.
- Small size may restrict the number of photos or memorabilia that can be included.
- May require careful handling to maintain the fabric’s durability over time.
Lanpn Baby Memory Book for New Parents, Blue, 154 Pages

The Lanpn Baby Memory Book for New Parents, Blue, with 154 pages, is an ideal choice for those seeking a thorough and beautifully crafted keepsake to document their child’s early years. Its gender-neutral design features a linen cover with elegant gold foil, woodland animals, and baby icons, making it both charming and durable. The lay-flat binding and quality 120gsm paper provide plenty of space for photos, notes, and drawings. With sections covering pregnancy to age 5, including milestones, firsts, and family stories, it offers all-encompassing coverage. Lightweight and portable, it’s perfect for capturing precious moments and creating a lasting family treasure.
Best For: new parents, families, or anyone looking for a meaningful, comprehensive keepsake to document a child’s early years from pregnancy to age 5.
Pros:
- High-quality, durable linen cover with attractive gold foil details.
- Spacious layout with 154 guided pages for photos, notes, and milestones.
- Versatile design suitable for both boys and girls, with extensive sections for family stories and childhood memories.
Cons:
- Content is entirely in English, which may limit accessibility for non-English speakers.
- The large number of pages might be overwhelming for those seeking a simpler keepsake.
- Availability and shipping may vary depending on location, and some users may find the weight slightly heavier for portability.
Baby Memory Book and Keepsake Box with 30 Milestone Stickers

Parents looking for an easy and flexible way to preserve their baby’s first-year memories will appreciate this Baby Memory Book and Keepsake Box with 30 Milestone Stickers. The 48-page, gender-neutral scrapbook offers space for photos and personal notes, capturing moments from birth to age five. The 30 milestone stickers highlight key achievements like first words and steps, making it simple to document important events visually. The included keepsake box, with nine compartments, helps store baby’s keepsakes, toys, and mementos. Overall, it’s a practical, charming solution for busy parents wanting to protect memories while adding personal touches.
Best For: new parents, grandparents, or anyone seeking a thoughtful and practical way to preserve a baby’s first-year memories and keepsakes.
Pros:
- Combines a flexible, gender-neutral memory book with milestone stickers for easy documentation of key moments.
- Spacious and sturdy keepsake box with multiple compartments for organized storage of baby items and mementos.
- Suitable as a thoughtful gift for baby showers or new parents, offering both practicality and sentimental value.
Cons:
- Assembly can be challenging due to misaligned holes, missing screws, or unclear instructions.
- Some quality concerns like dirt marks, scuffs, or missing parts have been reported.
- Prompts in the memory book could be more inclusive of medical details or special circumstances.
Lanpn Hello Baby First 5 Year Memory Book for Baby

Designed for capturing a child’s first five years, the Lanpn Hello Baby Memory Book is perfect for parents who want a durable, stylish keepsake to record every milestone. Its linen hardcover with woodland animals and gold foil cover gives it an elegant, gender-neutral look. The 120gsm thick pages are lay-flat for easy writing, and the book includes space for photos, notes, and milestones from pregnancy to age five. With guided prompts, sections for family stories, and room for 50 photos, it offers a all-encompassing way to preserve precious memories. Many parents appreciate its sturdy design and thoughtful layout, making it an ideal gift or keepsake to cherish forever.
Best For: parents or caregivers seeking a durable, stylish, and comprehensive keepsake to document their child’s milestones from birth to age five.
Pros:
- High-quality thick 120gsm paper and durable linen hardcover enhance longevity and ease of writing.
- Guided prompts and ample space for photos and notes make recording memories simple and organized.
- Gender-neutral woodland animals design and elegant gold foil cover make it suitable as a thoughtful gift or personal keepsake.
Cons:
- Limited space for a large number of photos may require selective photo choices.
- Occasional typographical errors and graphic preferences could affect visual appeal for some users.
- The size, while manageable, may feel slightly bulky for some parents to carry around frequently.
Baby Memory Book for Boys and Girls, 5-Year keepsake album from pregnancy to age five

If you’re looking for a beautifully crafted keepsake to capture your child’s early years, this Baby Memory Book for Boys and Girls is an excellent choice. It features 120 thoughtfully designed pages, including prompts, photo spots, and keepsake pockets, making it easy to document milestones, holidays, and special moments from pregnancy to age five. The high-quality materials and elegant, gender-neutral design ensure it’s durable and timeless. With organized dividers and ample space for photos and stories, it’s perfect for busy parents wanting to preserve memories in one beautiful album. Plus, the hardcover slipcase adds extra protection and presentation, making it a cherished keepsake for years to come.
Best For: parents, guardians, or gift-givers seeking a high-quality, gender-neutral keepsake album to document a child’s first five years with space for photos, milestones, and keepsakes.
Pros:
- Thoughtfully designed with prompts, photo pages, and keepsake pockets for comprehensive memory preservation
- Made from high-quality materials with a durable hardcover slipcase for long-lasting use and presentation
- Elegant, gender-neutral aesthetic suitable for both boys and girls, making it versatile for any family
Cons:
- Slightly heavier at 2.79 pounds, which may be less portable for some users
- Limited to ages up to five, not suitable for documenting later childhood years
- May require additional purchase of photo prints or other keepsake accessories for a complete memory collection
Factors to Consider When Choosing Baby Milestone Journals

When selecting a baby milestone journal, I consider several key factors to guarantee it’s the right fit. Things like age range compatibility, design, and durability matter because they affect how well it suits my needs. By paying attention to these points, I can choose a journal that’s both functional and meaningful.
Age Range Compatibility
Choosing the right baby milestone journal means guaranteeing it matches your child’s age and developmental stage. I look for journals that specify an age range, like birth to age 5, to ensure the prompts and pages align with my child’s milestones. It’s helpful if the journal includes adjustable or flexible sections so I can expand it as my baby grows beyond infancy. I also pay attention to the size and layout—making sure it’s suitable for photos, keepsakes, and notes I want to include at each stage. Most importantly, I choose a journal whose content and prompts are appropriate for my child’s age, helping me document meaningful moments without feeling overwhelmed. This way, I can cherish every milestone as my child develops.
Design and Style
The design and style of a baby milestone journal play a crucial role in how much I enjoy using it and how well it fits into my personal aesthetic. I consider the cover material—whether linen, leather, or sturdy cardboard—as it affects durability and tactile experience. The layout should strike a balance between visual appeal and practicality, with charming illustrations, prompts, and enough space for photos and notes. Choosing a cohesive theme, like woodland animals or fairy tales, helps personalize the journal and strengthen the emotional connection. Size and portability are also important; a compact design makes it easy to store or carry in a diaper bag. Ultimately, selecting a style that resonates with my taste makes documenting my baby’s milestones more enjoyable and meaningful.
Memory Preservation Features
To truly preserve your baby’s precious memories, it’s essential to look for a milestone journal that offers dedicated sections for photos, notes, and keepsakes. These features guarantee you can capture every detail, from adorable snapshots to heartfelt reflections. Consider whether the journal includes prompts or guided questions—it can make documenting milestones, emotions, and stories easier and more meaningful. Check if it has pockets or envelopes for storing physical keepsakes like hospital bracelets or tiny mementos; these add a special touch. Additionally, ensure the pages are made from archival-quality, acid-free paper to prevent deterioration over time. A good journal balances visual memories with written reflections, creating a rich, lasting keepsake that tells your baby’s story beautifully.
Ease of Use
Finding a baby milestone journal that’s easy to use can make all the difference in maintaining a consistent record. I look for clear, organized prompts and designated spaces to make recording events straightforward, even on busy days. A journal with high-quality, durable pages is essential, especially to handle handling and spills. I prefer layouts that make it simple to add photos, footprints, or keepsakes without needing complicated tools or adhesives. A simple, intuitive design minimizes effort and makes regular documenting effortless. The size and binding also matter—lightweight and easy to flip through help me update milestones quickly and without frustration. Ultimately, choosing a user-friendly journal guarantees I can focus on cherishing those precious moments, not struggling with the format.
Material Durability
Choosing a baby milestone journal that lasts through years of use means paying close attention to the materials’ durability. I look for thick cardstock, archival-grade paper, or laminated pages that can withstand frequent handling without tearing or fading. The cover material is equally important; options like linen, leather, or a sturdy hardback add extra resistance to wear and tear over time. Water-resistant or waterproof surfaces are a big plus, protecting against spills, stains, and environmental damage. Reinforced binding methods, such as lay-flat or spiral binding, help keep pages secure even with regular use. High-quality construction ensures the journal maintains its appearance and integrity, preventing issues like warping or detaching. Durability is key to preserving those precious memories for years to come.
Size and Portability
Selecting the right size for a baby milestone journal is essential to guarantee it fits seamlessly into your daily routine. I look for a size that comfortably sits on shelves or slips into my diaper bag for easy access. A balance between ample space for photos and notes and manageable weight is key. Smaller journals, around 6-8 inches, are perfect for parents on the go, offering portability without sacrificing function. Larger sizes, over 9 inches, provide extra room for detailed entries and pictures, but can be bulkier to carry. Lightweight materials like thin covers or spiral bindings boost portability without compromising durability. Ultimately, I want a journal that’s easy to transport and store, especially when I’m out and about or limited on space.
Gift Potential
A baby milestone journal makes a heartfelt gift when it features attractive packaging and personalized touches that show thoughtfulness. I look for journals with high-quality materials like hardcover covers or thick pages, ensuring they last for years as cherished keepsakes. Including prompts, milestone stickers, or keepsake pockets adds interactivity and makes the gift more engaging. A versatile, gender-neutral design broadens its appeal, making it suitable for any family. Elegant packaging, such as premium boxes or ready-to-gift wrapping, elevates its presentation for occasions like baby showers or birthdays. These thoughtful details make the journal not just a practical item but a meaningful, memorable gift that parents will treasure forever. The right presentation and personalization truly enhance its gift potential.
Frequently Asked Questions
How Do I Choose the Best Milestone Journal for My Child’s Personality?
To pick the perfect milestone journal for my child’s personality, I focus on their interests and style. I consider whether they’d love a colorful, playful design or something simple and elegant. I also think about how they’ll use it—are they detail-oriented or casual? I choose a journal that feels personal and fun, making it easy for me to capture their unique moments and personality as they grow.
Are Milestone Journals Suitable for Multiple Children?
Absolutely, milestone journals are perfect for multiple children! I’ve filled one out for each of my kids, and it’s like having a treasure chest of memories for every little personality and milestone. They make celebrating each child’s unique journey even more special, and I love how they keep my family’s story alive and vibrant. Trust me, these journals turn fleeting moments into lifelong keepsakes for every child in your life.
What Is the Ideal Age to Start Using a Baby Memory Book?
I believe the ideal age to start using a baby memory book is right after birth or during the first few weeks. I started mine early because I wanted to capture those precious first moments, like their first smile or tiny fingers. Beginning early makes it easier to record details while they’re fresh in your mind. Plus, it becomes a lovely keepsake to look back on as they grow.
Can Milestone Journals Be Personalized or Customized?
Absolutely, milestone journals can be personalized or customized, turning them into unique treasures. Think of them as blank canvases waiting for your story—adding names, photos, or special dates makes each journal one-of-a-kind. It’s like weaving your own memories into a beautiful tapestry, ensuring every milestone reflects your child’s personality. Personalization transforms a simple journal into a heartfelt keepsake, capturing your little one’s journey in a truly meaningful way.
How Do I Preserve Keepsake Items in a Memory Book?
To preserve keepsake items in a memory book, I recommend using acid-free, archival-quality materials to prevent deterioration. I carefully attach items with photo corners or acid-free adhesive strips, avoiding glue that could damage them. I also store delicate keepsakes in small plastic sleeves or envelopes before placing them in the book. Regularly checking the condition and keeping the book in a cool, dry place helps guarantee your cherished mementos stay beautiful over time.
Conclusion
Choosing the perfect milestone journal means capturing both the fleeting moments and the lasting memories. As I look back, I realize it’s the small, everyday milestones that truly define their early years—moments like a first step or a giggle. These journals aren’t just books; they’re treasures that hold the magic of childhood. In the end, it’s about cherishing the chaos and the calm, forever holding onto those precious firsts.