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 ...

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...

33% Off

Terramar 2.0 Thermolator II CS Midweight Pants - Men's

$29.99

~~$45.00~~

A midweight, extremely comfortable, brushed polyester spandex pant with four-way stretch for unrestricted movement, and Climasense thermoregulation comfort. The Terramar Men's 2.0 Thermolator II CS...

33% Off

Coldpruf Basic Midweight Underwear Tall Pants - Men's

$19.99

~~$30.00~~

The Coldpruf Men's Tall 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 enginee...

25% Off

Coldpruf Platinum II Midweight Underwear Crew Shirt - Men's

Black long-sleeve shirt on a white background

$29.99

~~$40.00~~

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...

27% Off

Terramar Ecolator CS 3.0 Long Sleeve Fleece Crew Shirt - Men's

$39.99

~~$55.00~~

Our Ecolator® Crew is made from 95% recycled Polyester and features high loft grid channels that create an ideal microclimate which efficiently traps air and effectively allows circulation. A great...

25% Off

Coldpruf Platinum II Midweight Underwear Pants - Men's

$29.99

~~$40.00~~

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...

Patagonia Men's Capilene Midweight Zip Neck

$89.00

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® P...

27% Off

Coldpruf Platinum II Midweight Underwear Crew Shirt - 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...

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...

33% Off

Person wearing black leggings on a white background

Terramar 2.0 Cloud Nine CS Midweight Pants - Women's

$29.99

~~$45.00~~

With unsurpassed comfort, the Terramar Women's 2.0 Cloud Nine Pants are the ultimate midweight base layer. With relaxed fitting spandex construction, coupled with soft, brushed polyester, these wil...

33% Off

Terramar 2.0 Cloud Nine CS Midweight Long Sleeve Scoopneck Shirt - Women's

$29.99

~~$45.00~~

With unsurpassed comfort, the Terramar Women's 2.0 Cloud Nine Scoop is the ultimate midweight base layer. With relaxed fitting spandex construction, coupled with soft, brushed polyester, this will ...

Patagonia Women's Capilene Midweight Bottoms

$89.00

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® P...

Patagonia Women's Capilene Midweight Zip Neck

$89.00

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pu...

53% Off

Terramar Cloud Nine Scoopneck Print Shirt - Women's

from $21.00

~~$45.00~~

The Cloud Nine Scoop 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 featur...

Patagonia Men's Capilene Midweight Bottoms

$79.00

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pu...

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

Terramar Men's Ecolator 3.0 Ecolator Pant

$39.99

~~$55.00~~

Called a "Killer Value" in the Winter Outside Magazine Buyer's Guide, warmth and layering performance is what the Terramar Ecolator is all about. The high loft grid channels create an ideal microcl...

53% Off

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

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

$21.00

~~$45.00~~

Women's 2.0 Cloud Nine Crew Lightweight Top A light base for your winter cardio pursuits Ultra-soft brushed surface traps in heat and is breathable 4-way stretch fabric doesn’t restrict movement A...

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...

$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 ...

$48.00

~~$0.00~~

Billowy warmth without added weight, Micro Fleece under layers are durable and breathable. When it's really chilly outside, let our Micro Fleece keep you warm so you can focus on fun! Our Micro Fle...

$48.00

~~$48.00~~

Extremely soft warmth without weight, our Micro Fleece base layer shirt is durable and breathable. When it's really cold outside, this microfiber polyester crew is an excellent choice for layering ...

$48.00

~~$0.00~~

Microfiber polyester yarns make the fabric of these fleece thermal pants so soft to the touch! Billowy warmth without weight, Micro Fleece base layers are durable and breathable. When it's cold, th...

$49.00

~~$0.00~~

Originals thermal tights are a long time kids' favorite with a soft cotton-like hand feel that does not hold moisture. Made with MTF Moisture Transfer Fibers, these children's winter tights move...

Black long-sleeve shirt with blue accents on a white background

$49.00

~~$0.00~~

If you're looking for classic children's thermal, look no further than Hot Chillys Originals. Improving on the qualities that made the first generation so popular, this updated thermal underwear ...

Person wearing a black long-sleeve top and leggings on a white background

$115.00

100% Merino. 100% capable. Our Women's Merino Base Layer Bottom is always ready for what's ahead and what's next. With a fit updated to improve functionality while enhancing aesthetics for a ran...

Base Layer

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