Athletic Base Layers

Athletic base layers are the unsung heroes of any active wardrobe, offering the perfect blend of comfort and versatility for all your outdoor pursuits. Designed to keep you comfortable and confident, these essential pieces provide a reliable foundation for layering in any season. Whether you're hitting the trails, taking on a new fitness challenge, or simply enjoying a brisk walk, athletic base layers ensure you stay at your best by managing moisture and maintaining warmth. With their timeless appeal and enduring quality, they are a must-have for anyone who loves to embrace the great outdoors.

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298 Items

Women's Silk Underwear, Pants

A lightweight, cream-colored silk base layer providing breathable warmth without bulk for women.

Pros: Soft and smooth fabric Versatile use Breathable warmth Lightweight and thin Comfortable fit
Men's L.L.Bean Midweight Base Layer Pants
Price was from: $49.95 now: $29.99

A black synthetic midweight base layer pant that wicks moisture, resists odor, and stretches comfortably.
Men's Cresta Wool Midweight 250 Crew Top

A dark black merino wool crew top that wicks sweat, resists odor, and features thumbhole cuffs.

Pros: Great fit Comfortable feel Durable material Soft fabric Excellent warmth
Men's Silk Underwear, Pants

A strong, lightweight black silk base layer offering warmth and comfort without added bulk.

Pros: Great fit Quality Warmth Comfortable Versatile for weather
Men's Cresta Midweight 250 Pants

A versatile base layer made of 100% merino wool that wicks sweat, resists odor, and keeps you warm.

Pros: Soft material Odor resistant Versatile use Great warmth Comfortable fit
Men's Silk Underwear, Crewneck

A lightweight, dark flint gray crewneck made from 100% silk, perfect as a warm base layer.

Pros: High fabric quality Durable material Great for travel Comfortable fit Excellent warmth
Women's Cresta Midweight 250 Pants, High-Rise Slim-Leg

A high-rise, slim-leg base layer made of 100% merino wool, perfect for warmth and odor resistance.

Pros: Great fit High-quality fabric Non-itchy material Comfortable to wear Excellent warmth
Men's Cresta Midweight 250 Quarter-Zip Top

A versatile merino wool base layer in saddle heather, featuring a quarter-zip and thumbhole cuffs.

Pros: Convenience Keeps you warm Comfort Durability Versatility
Women's Cresta Midweight 250 Crew Top

An eggplant heather, midweight merino wool crew top that wicks sweat, resists odor, and keeps you warm.

Pros: Great fit Breathable fabric Perfect base layer Soft and comfortable Excellent warmth
Men's L.L.Bean Fleece Baselayer Pants
Price was from: $44.95 now: $34.99

A pair of cadet blue fleece pants made from recycled polyester, perfect for layering or lounging.

Pros: Cozy Warm Comfortable Thick Soft
Women's L.L.Bean Heavyweight Base Layer Pants
Price was from: $59.95 now: $39.99

A heavyweight green base layer pant made from recycled polyester, offering warmth, odor control, and moisture-wicking comfort.
Women's Cresta Midweight 250 T-Zip Top

A dark black merino wool base layer that wicks sweat, resists odor, and features thumbhole cuffs.

Pros: Well-made Warmth True to size Versatile Comfortable
Men's Cresta Ultralight 150 Crew Top

An alloy gray, extra-large base layer made of 100% merino wool, offering warmth and comfort year-round.

Pros: Soft material Warmth Good fit Comfortable Versatility
Women's Cresta Ultralight 150 Crew Top

An alloy gray, form-fitting base layer made of 100% merino wool, perfect for any season.

Pros: Not itchy Lightweight Versatile Comfortable Warm
Men's Cresta Wool Ultralight 150 Pants

An ultralight base layer made of 100% merino wool, offering warmth and odor resistance in alloy gray.

Pros: Stylish design Lightweight feel Durable material Warm without bulk Comfortable fit
Women's L.L.Bean Simple Soft Base Layer, Crew

A lightweight, dark black synthetic base layer crewneck with moisture-wicking, quick-dry fabric and thumbholes.

Pros: Great fit Smooth fabric Softness Dino style Material
Women's Cresta Ultralight 150 Crew Top, Short-Sleeve
Price was from: $69 now: $29.99

An alloy gray, short-sleeve base layer made from 100% merino wool, perfect for transitioning seasons.

Pros: Great color Lightweight and versatile High-quality fabric Comfortable wool material Excellent warmth
Women's Cresta Ultralight 150 Pants, High-Rise Slim-Leg

A remarkably soft and warm base layer made of 100% merino wool in alloy gray.
Women's L.L.Bean Simple Soft Base Layer, Pants

A lightweight, moisture-wicking synthetic base layer pant in dark black, perfect for everyday warmth and comfort.

Pros: Adds extra warmth Lightweight Softness Good fit Comfortable
Women's Cresta Wool Ultralight 150 Base Layer, Hoodie

An ultralight, alloy gray Merino wool hoodie that wicks moisture, resists odors, and fits comfortably under helmets.

Pros: High-quality material Easy to care for Perfect under layer Lightweight design Comfortable fit
Men's Cresta Wool Ultralight 150 Base Layer, Hoodie

An alloy gray, 100% Merino wool hoodie base layer that wicks moisture, resists odors, and fits snugly.

Pros: Soft and fleecy interior Ideal for winter sports Warm and comfortable Good fit Fashionable and supportive
Men's L.L.Bean Simple Soft Base Layer, Pants

A lightweight, moisture-wicking base layer in faded sage heather, made from 94% polyester and 6% spandex.

Pros: Great for layering Provides warmth Lightweight feel
Women's Cresta Wool Ultralight 150 Turtleneck

An ultralight, form-fitting turtleneck made of 100% Merino wool, in alloy gray, with thumbhole cuffs.

Pros: Cleanliness High quality Warmth Comfortable fabric Low maintenance
Men's Cresta Ultralight 150 Crew Top, Stripe

A remarkably soft and warm striped crew top made of 100% merino wool with thumbhole cuffs.

Athletic Base Layers

When it comes to gearing up for active days outside, the right base layers can make all the difference. Whether you’re setting out for a sunrise hike, catching the cool air on a morning run, or heading to the trailhead for an afternoon bike ride, athletic base layers are designed to keep you comfortable, dry and moving with ease. Crafted for lasting value and built to handle everything from high-intensity workouts to laid-back walks with the family, these layers form the foundation of any outdoor adventure. They’re made to wick away moisture, dry quickly and feel soft against your skin, so you can focus on enjoying the fresh air and sunshine. With summer in full swing, lighter-weight options are especially popular, offering just the right blend of breathability and comfort. Many people find that these versatile layers are a staple not just for solo pursuits, but for group activities as well—think of family camping trips, backyard games, or neighborhood pickleball matches. They’re also a thoughtful gift for anyone who loves to stay active, whether that’s a friend training for their first 5K, a partner who enjoys weekend paddleboarding, or a parent who appreciates gear that keeps up with a busy, on-the-go lifestyle.

Choosing the right athletic base layer often comes down to a few key considerations: comfort, durability, and ease of use. Look for options that move with you and won’t bunch or chafe, even during long hours on the trail or at the gym. Flat seams, tagless designs and stretchy fabrics all help ensure a smooth, irritation-free fit. Durability is important too—these are pieces you’ll reach for again and again, so it’s worth finding base layers that hold up to repeated washes and lots of wear. Many styles are designed to pull double duty, working well as a first layer under running shorts or hiking pants, and just as easily worn on their own while stretching in the backyard or relaxing after a workout. For families, the right base layers mean everyone can join in on the fun, from kids racing around the park to grandparents joining in on a nature walk. And since summer brings its own set of challenges—like humidity and sudden changes in weather—it’s handy to have a few lightweight options ready to go. If you’re looking for something tailored to warmer days, check out our collection of Summer Base Layers for even more ways to stay cool and comfortable in the heat.

No matter your favorite way to stay active, athletic base layers are a reliable companion for all kinds of outdoor fun. They’re easy to pack, quick to wash, and built with the kind of timeless quality that stands up to seasons of adventure. From morning yoga on the patio to impromptu games of frisbee at the park, these layers help make every activity a little more enjoyable. They’re a smart choice for anyone who values comfort and versatility, and they make a welcome addition to any gear closet. With thoughtful details and a focus on lasting performance, athletic base layers are ready to help you make the most of every sun-filled day.

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Athletic Base Layers