Adult Base Layers

Embrace the outdoors with confidence and comfort by exploring our range of adult base layers. Designed to be the perfect foundation for any outdoor adventure, these versatile essentials offer a seamless blend of style and practicality. Whether you're hiking through forest trails or enjoying a chilly morning run, our base layers provide the ideal balance of warmth and breathability. Crafted with high-quality materials that promise durability and lasting value, they effortlessly adapt to your every move, ensuring you stay comfortable no matter where your journey takes you.

Sort by:

Filter & Sort

298 Items

Men's Two-Layer Union Suit

A supersoft, roomy red union suit with a wool blend for warmth and itch-free cotton interior.

Pros: Functional Fits well Well-made Warmth Comfortable
Men's L.L.Bean Midweight Base Layer Pants
Price was from: $49.95 now: $39.99

A blue synthetic base layer pant that wicks moisture, resists odor, and offers comfortable stretch.
Men's Cresta Wool Midweight 250 Crew Top

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

Pros: Durable fabric Comfort Warmth Softness Good fit
Men's Cresta Midweight 250 Pants

A versatile base layer made of itch-free merino wool, offering warmth and odor resistance in carbon navy.

Pros: Odor resistant Great color Versatile use Excellent warmth Comfortable fit
Men's Silk Underwear, Crewneck
Price was from: $49.95 now: $39.99

An iron blue silk crewneck providing lightweight warmth and comfort, perfect as a base layer.

Pros: Durable Comfortable Warm Great for travel Feels like real silk
Men's Double-Layer Underwear, Crewneck
Price was from: $49.95 now: $39.99

A gray wool-blend crewneck sweatshirt featuring double-layer thermal construction for superior warmth.
Men's Cresta Midweight 250 Quarter-Zip Top

A midweight merino wool quarter-zip top in carbon navy, designed to wick sweat and resist odor.

Pros: Keeps you warm Excellent base layer Comfort Durability Versatility
Men's L.L.Bean Fleece Baselayer Pants
Price was from: $44.95 now: $34.99

A warm, cadet blue fleece baselayer made from recycled polyester, perfect for skiing or lounging.

Pros: Cozy Warm Comfortable Thick Soft
Men's Cresta Ultralight 150 Crew Top

A remarkably soft and warm alloy gray base layer made from 100% merino wool with thumbhole cuffs.

Pros: Soft material Warmth Good fit Comfortable Well made
Men's Cresta Wool Ultralight 150 Pants

An ultralight base layer made of 100% merino wool, perfect for cool-weather sports and odor-resistant.

Pros: Lightweight Warm without being bulky Stylish Durable Comfortable
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 pant in dark black heather, made from a polyester-spandex blend.

Pros: Ideal for layering Provides warmth Lightweight feel
Men's Cresta Ultralight 150 Crew Top, Stripe

A remarkably soft and warm striped crew top made of 100% merino wool, perfect for any season.
Men's L.L.Bean Simple Soft Base Layer, Crew

A lightweight, moisture-wicking synthetic base layer crewneck in faded sage heather, perfect for everyday warmth.
Men's L.L.Bean Heavyweight Base Layer Pant

A midnight black heavyweight base layer pant made from recycled polyester, perfect for warmth and moisture-wicking.
Men's Cresta Wool Ultralight 150 Turtleneck

An alloy gray, 100% merino wool turtleneck that wicks moisture, resists odors, and features thumbhole cuffs.
Men's L.L.Bean Heavyweight Base Layer Pant, Print

A heavyweight base layer pant in kelp green camo, made from recycled polyester for warmth and moisture-wicking.
Men's L.L.Bean Heavyweight Base Layer Crew Top, Print

A heavyweight, moisture-wicking, and quick-drying base layer with anti-microbial finish in kelp green camo.
Men's L.L.Bean Heavyweight Baselayer Hoodie

A midnight black, moisture-wicking hoodie made from recycled polyester blend with anti-microbial finish and thumb holes.
Men's L.L.Bean Midweight Base Layer Crew Top, 1/4 Zip

A versatile midweight base layer with REPREVE® recycled polyester, offering warmth, moisture-wicking, and odor resistance.
Men's L.L.Bean Heavyweight Base Layer Hoodie, Print

A heavyweight base layer hoodie in kelp green camo, made from recycled polyester and elastane.
Men's L.L.Bean Lightweight Crew Base Layer, Long Sleeve
Price was from: $39.95 now: $29.99

A lightweight black synthetic crew with moisture-wicking, quick-dry, and odor-resistant properties for active comfort.
Men's L.L.Bean Midweight Base Layer Crew Top

A midweight, moisture-wicking crew top made from recycled polyester with anti-odor treatment and thumb holes.
Men's Cresta Ultralight 150 Turtleneck, Stripe

A lightweight, itch-free 100% merino wool turtleneck in regatta blue, perfect as a base layer for winter sports.

Adult Base Layers

Base layers are the unsung heroes of any outdoor wardrobe, quietly working behind the scenes to keep you comfortable and ready for whatever the day brings. Whether you’re heading out for a brisk morning walk, planning a weekend camping trip, or just looking to stay cozy during cool evenings around the backyard fire pit, the right base layer makes all the difference. With warmer days and unpredictable spring weather in full swing, many folks find themselves reaching for lightweight, breathable options that wick moisture and provide just the right amount of warmth without overheating. These versatile pieces are designed to be worn next to the skin, forming the foundation for any layering system—making them a smart choice for anyone who loves spending time outside, no matter the activity or time of year. From seasoned hikers and runners to those who simply enjoy a relaxed stroll through the park, base layers offer lasting comfort and reliable performance, helping you focus on enjoying the moment rather than fussing with your gear.

When choosing base layers, it’s important to consider the conditions you’ll encounter and the activities you have planned. Look for materials that feel soft and comfortable against your skin, with enough stretch to move freely as you reach, bend, or climb. Many base layers are crafted with moisture-wicking fabrics that help pull sweat away from your body, keeping you dry and comfortable whether you’re setting up camp on a dewy morning or cycling along a breezy trail. Durability is key, too—well-made base layers stand up to repeated washing and wear, maintaining their shape and performance season after season. These are pieces that quickly become favorites, often passed around the family or given as thoughtful gifts to friends who appreciate time outside. A quality base layer is a practical present for anyone who enjoys outdoor adventures, from the avid angler to the backyard gardener. And with a wide range of sizes, styles, and colors—including classic neutrals and more vibrant hues—it’s easy to find something that suits every personality and need. If you’re drawn to a fresh pop of color for the season, you might enjoy exploring our collection of Blue Base Layers, which bring a cheerful touch to any outdoor ensemble.

Base layers aren’t just for chilly weather—they’re a year-round essential, especially during the shifting temperatures of spring and early summer. Lightweight options are perfect for layering under a windbreaker on a cool morning, then wearing on their own as the day warms up. Their versatility makes them ideal for travel, camping, or even just relaxing at home after a long day outside. The best base layers are thoughtfully designed for easy care and everyday use, so you can toss them in your pack or gym bag without a second thought. They’re the kind of gear that quietly earns your trust—dependable, comfortable, and always ready for whatever adventure comes next. Whether you’re shopping for yourself or searching for a practical gift that’s sure to be appreciated, you’ll find that base layers offer lasting value and timeless style, making every day outside just a little more enjoyable.

It's time to upgrade your browser

Adult Base Layers