Infant Base Layers

Infant base layers are the perfect foundation for keeping your little ones cozy and comfortable during any adventure. Designed with quality materials, these essential pieces offer lasting value and versatility, making them a must-have for every parent. Whether you're planning a family outing or simply enjoying a day at home, infant base layers provide the ideal blend of softness and durability. With styles that suit every occasion, you can ensure your baby stays snug and happy, no matter where the day takes you.

Sort by:

Filter & Sort

298 Items

Infants' Wicked Warm Underwear, One-Piece
Price was from: $39.95 now: $29.99

A cozy purple midweight one-piece base layer for infants, made from 100% polyester with easy snaps.
Infants' Wicked Warm Underwear, One-Piece, Print

A colorful, moisture-wicking one-piece base layer in multi-color synthetic fabric with easy-entry snaps.
Infants' L.L.Bean Hi-Pile Fleece Bunting

A super snuggly field rose fleece bunting with rollover cuffs and a deep full-front zipper for infants.

Pros: Comfort Warmth Ease of use Calming effect Versatility
Infants' and Toddlers' Mountain Classic Fleece
Price was from: $54.95 now: $39.99

A warm, anti-pill fleece jacket in sprout green with reflective details, perfect for infants and toddlers.

Pros: Lightweight Good in snow Roomy jacket Cozy Warm
Infants' Ultralight 650 Down Bunting

A water-resistant, carbon navy bunting with 650-fill DownTek™ and rollover mittens for infants aged 12-18 months.

Pros: Warm for winter Good fit for infants High quality material
Infants' and Toddlers' L.L.Bean Sweater Fleece, Full-Zip

A cozy, full-zip fleece with a sweater-knit look, perfect for active infants and toddlers.

Pros: Lightweight Warmth Softness Great coverage Cute design
Kids' Wicked Warm Midweight Long Underwear, Top Print

A multi-color printed synthetic top with thumbhole cuffs that keeps kids warm and dry all winter.
Toddlers' Wicked Warm Midweight Underwear Set, Print

A moisture-wicking, midweight two-piece set in multi-color print, made from soft, synthetic polyester.
Infants' and Toddlers' L.L.Bean Sweater Fleece, Full-Zip Print
Price was from: $74.95 now: $54.99

A cozy, full-zip fleece with a coal snowflake fairisle print, perfect for active infants and toddlers.
Infants' and Toddlers' Mountain Classic Fleece, Colorblock
Price was from: $49.95 now: $39.99

A cozy, anti-pill fleece hoodie in nautical navy with a full zip-front and reflective back triangle.
Infants' and Toddlers' Mountain Fleece Pants

A pair of regatta blue heather fleece pants with stretch, perfect for active infants and toddlers.
Infants' and Toddlers' L.L.Bean Sweater Fleece, Hooded Colorblock

A cozy, hooded fleece with fun colorblocking, perfect for active toddlers, in bright navy and pewter.

Infant Base Layers

When it comes to keeping infants comfortable through all sorts of adventures—whether that’s a first trip to the lake, a backyard picnic, or simply naptime in a cool, air-conditioned room—base layers are a true essential. The right infant base layers serve as a gentle foundation for everything your little one does, providing soft, breathable comfort that moves with every wiggle and stretch. Parents, grandparents, and caregivers alike know how quickly the weather can shift, even on a sunny July afternoon. That’s why base layers are such a smart choice: they’re designed to regulate temperature, wick away moisture, and add an extra measure of coziness without ever feeling bulky or restrictive. These versatile pieces often become the go-to for everyday wear, offering lasting value through repeated washes and constant use. And because they’re made to stand up to all the crawling, rolling, and exploring that comes with infancy, you can count on them to hold their shape and softness, wash after wash.

Base layers for infants also make thoughtful, practical gifts—especially for new parents building out a layette or anyone looking to add a little extra comfort to a young child’s daily routine. With timeless styles and easy-to-layer designs, they’re a welcome addition to any baby shower or birthday celebration. The best infant base layers are crafted for durability and ease of use, featuring fuss-free closures and stretchy fabrics that make dressing quick and simple, even during those wiggly, on-the-go moments. In the warmer months, lightweight base layers are especially handy for layering under sun hats and rompers, or for providing just the right amount of coverage during outdoor play. When temperatures rise, it’s important to choose materials that breathe well and help keep skin dry, ensuring that your little one stays comfortable from morning walks to afternoon naps. For families who spend a lot of time outside, or who love to travel, these base layers are a reliable staple—just as at home on a breezy porch as they are packed in a diaper bag for a weekend away.

No matter how you use them, quality infant base layers offer peace of mind, knowing that your child is wrapped in comfort that’s built to last. Their timeless appeal and practical benefits make them a smart investment for any season, but they’re especially appreciated during the summer months when lightweight, breathable clothing is key. If you’re looking to round out your child’s wardrobe or searching for the perfect gift for a growing family, you’ll find plenty of inspiration in our collection. For more options designed specifically for warmer weather, be sure to explore our Summer Base Layers page, where you’ll find even more ways to keep your little one cool, comfortable, and ready for every adventure that comes your way.

It's time to upgrade your browser

Infant Base Layers