Base Layer & Thermal Underwear

Coldpruf Basic Midweight Underwear Crew Shirt - Men's

$15.99

The Coldpruf Men's Basic Midweight Crew Shirt is a base layer underwear garment, designed to trap air between its two layers, providing a natural barrier of warmth. The two-layer engineering delive...

Coldpruf Basic Midweight Underwear Pants - Men's

$15.99

The Coldpruf Men's Basic Midweight Underwear Pants are a base layer underwear garment, designed to trap air between its two layers, providing a natural barrier of warmth. The two-layer engineering ...

23% Off

Coldpruf Enthusiast Polypropylene Lightweight Pants - Men's

$22.99

~~$30.00~~

The Coldpruf Men's Enthusiast Polypropylene Lightweight Pants are a single-layer garment made out of 100% polypropylene, engineered to give a close comfortable fit without being restrictive. The En...

23% Off

Coldpruf Enthusiast Polypropylene Lightweight Crew Shirt - Men's

$22.99

~~$30.00~~

The Coldpruf Men's Enthusiast Polypropylene Lightweight Crew Shirt is a single layer garment made out of 100% polypropylene engineered to give a close comfortable fit without being restrictive. The...

33% Off

$29.99

~~$45.00~~

The Thermolator 2.0 Crew Neck Top is the ideal piece for all day warmth and comfort while being out in the elements. This versatile piece features an ultra-soft, midweight fabric utilizing our fe...

SmartWool Merino 250 Baselayer Crew - Men's

$115.00

Meet the better-than-ever Men's Merino 250 Base Layer Crew. We've updated this 100% Merino wool fan-favorite with new colors and a new fit to improve functionality while enhancing aesthetics. Shoul...

SmartWool Merino 250 Baselayer Bottom - Men's

$125.00

We've updated our Men's Merino 250 Base Layer Bottom to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wool will help you keep your game at a high level fo...

Smartwool Men's Intraknit Thermal Merino Base Layer Crew

$130.00

This minimalist-style crew is anything but insignificant. Our Men's Intraknit™ Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather ac...

27% Off

Coldpruf Platinum II Midweight Underwear Crew Shirt - Men's Tall

Black long-sleeve shirt on a white background

$32.99

~~$45.00~~

Your TRUSTED base layer REBUILT for the MODERN ADVENTURE. Inside Layer: 100% ColdPruf® Technical Fiber Polyester with SILVADUR™ Intelligent Freshness Outside Layer: 70% polyester / 30% MERINO WOOL...

14% Off

Coldpruf Union Suit Men's One-Piece Suit

$59.99

~~$70.00~~

Two-layer engineering Traps air between layers providing a natural barrier of warmth Full button front Union Suit with single button rear flap Inside Layer: 100% combed ring spun cotton Outside La...

Coldpruf Journey Single Layer Fleece Crew - Men's

$21.99

~~$0.00~~

Single layer, lightweight fleece 100% ColdPruf® Technical Fiber Polyester with SILVADUR™ Intelligent Freshness Fabric weight: 5 OZ. Rib Cuffs Drop Tail for added protection against cold Regular Fit

Coldpruf Basic Midweight Underwear Crew Shirt - Women's

$15.99

The Coldpruf Women's Basic Midweight Crew Shirt is a base layer underwear garment, designed to trap air between its two layers, providing a natural barrier of warmth. The two-layer engineering deli...

Coldpruf Basic Midweight Underwear Pants - Women's

$15.99

The Coldpruf Women's Basic Midweight Underwear Pants are a base layer underwear garment, designed to trap air between its two layers, providing a natural barrier of warmth. The two-layer engineerin...

20% Off

Coldpruf Enthusiast Polypropylene Lightweight Crew Shirt - Women's

$19.99

~~$25.00~~

The Coldpruf Women's Enthusiast Polypropylene Lightweight Crew Shirt is a single-layer garment made out of 100% polypropylene, engineered to give a close comfortable fit without being restrictive. ...

20% Off

Coldpruf Enthusiast Polypropylene Lightweight Pants - Women's

$19.99

~~$25.00~~

The Coldpruf Women's Enthusiast Polypropylene Lightweight Pant are a single-layer garment made out of 100% polypropylene, engineered to give a close comfortable fit without being restrictive. The e...

25% Off

Coldpruf Platinum Mid Weight Crew Shirt - Women's

$29.99

~~$40.00~~

Coldpruf Women's Platinum Crew Thermal Shirt is specifically engineered to trap air between its layers of fabric to provide a natural warmth shield. Product Features:Long sleeve, Crew neck, Flat se...

SmartWool Women's Classic Thermal Merino Base Layer Crew

$115.00

Meet the new and improved Women's Merino 250 Base Layer Crew. We've updated this 100% Merino wool fan-favorite with new color options and an enhanced fit to improve functionality while elevating ae...

Woman wearing a black long-sleeve top and pants on a white background

Person wearing a black long-sleeve athletic top on a white background

$89.00

~~$0.00~~

A classic, all-around polyester baselayer made with 50-100% recycled content. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture a...

17% Off

Coldpruf Enthusiast Polypropylene Lightweight Tall Crew Shirt - Men's

$24.99

~~$30.00~~

The Coldpruf Men's Enthusiast Polypropylene Lightweight Tall Crew Shirt is a single-layer garment made out of 100% polypropylene, engineered to give a close comfortable fit without being restrictiv...

38% Off

$29.99

~~$48.00~~

This Terramar Cloud Nine 2.0 Baselayer Turtle Neck is designed to keep you warm and comfortable during outdoor activities. Made with soft, lightweight fabric and featuring a turtle neck, it is perf...

27% Off

Coldpruf Platinum II Midweight Underwear Pants - Men's Tall

$32.99

~~$45.00~~

Your TRUSTED base layer REBUILT for the MODERN ADVENTURE. Inside Layer: 100% ColdPruf® Technical Fiber Polyester with SILVADUR™ Intelligent Freshness Outside Layer: 70% polyester / 30% MERINO WOOL...

25% Off

$41.25

~~$55.00~~

We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why, we built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay fo...

25% Off

$45.00

~~$60.00~~

Meet the all-new UA Base™—delivering the same trusted warmth without the bulk—now softer and smoother than ever for unmatched comfort on every adventure. UA Base™ 2.0 Active Baselayer is lightweig...

25% Off

$45.00

~~$60.00~~

Meet the all-new UA Base™—delivering the same trusted warmth without the bulk—now softer and smoother than ever for unmatched comfort on every adventure. UA Base™ 2.0 Active Baselayer is lightweig...

50% Off

Person wearing a black long-sleeve top and blue pants with a beige cap on a light gray background

Person wearing a black hoodie and gray pants on a light gray background

$32.50

~~$65.00~~

The super soft UPF 50 hoody for adventures big and small Perfect for giving it your all on the next pitch or pacing on your favorite trail, the Butter™ Long Sleeve Hoody is big on performance witho...

Woman wearing a black long-sleeve athletic shirt on a white background

Person wearing a black full-body suit on a white background

$90.00

An all-season favorite, the Women's Classic All-Season Merino Base Layer Long Sleeve can be sported as a base layer in the fall or summer when it's time to go backpacking. This base layer features ...

50% Off

Mountain Hardwear Men's Butter Up™ Long Sleeve Shirt

$30.00

~~$60.00~~

Crucial UPF 50 sun protection that’s moisture wicking and anti-odor for running solo or layering. Make every high effort outing smooth as butter with a long-sleeve layer that’s worth its weight in ...

Smartwool Kids' Classic Thermal Merino Base Layer Crew

$65.00

Our Kids' Classic Thermal Merino Base Layer Crew is made of 100% responsibly sourced Merino wool to help your little ones stay comfortable on snow days and activities in the mountains. With a flatl...

$43.00

~~$0.00~~

Our Men's Active Stretch Bottom offers superior moisture-wicking performance combined with thermal warmth to keep you comfortable during any activity. Its flexible, stretch fabric moves with you, p...

$43.00

~~$0.00~~

Our Men's Active Stretch Crewneck delivers reliable thermal performance with a comfortable, flexible fit. Designed to wick moisture and retain warmth, this top keeps you dry and cozy during intense...

$43.00

~~$0.00~~

The Women's Active Stretch Crewneck is a versatile long-sleeve base layer designed to keep you comfortable and dry during any activity. Its moisture-wicking fabric moves with you, providing a snug ...

$43.00

~~$0.00~~

The Womens Active Stretch Tight combines moisture-wicking technology with thermal warmth to keep you comfortable and dry. Its stretchy, close-fitting fabric moves with your body, providing support ...

Base Layer

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