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Base Layer

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Person wearing black leggings on a white background Person wearing black long-sleeve top and leggings on a white background
$90.00
$90.00
Our Women's Classic All-Season Merino Base Layer Bottoms are the perfect layer to put on for your warm-weather adventures. Made of lightweight, breathable Merino, these base layer pants have an upd...
25% Off
Coldpruf Polypropylene Underwear Crewneck Shirt - Kid's
$14.99
$14.99
$20.00
Sizes: XS(4-5), S(6-8), M(10-12), L(14-16), XL(18-20).The Enthusiast underwear program by Coldpruf features single-layer 100% polypropylene construction. It is designed to give a close comfortable ...
Black long-sleeve athletic shirt on a white background
$37.99
$37.99
$0.00
Performance that moves with you. The ColdPruf® Style 49A Performance Crew is built for cold to very cold weather and medium- to high-activity levels. Its athletic, close-to-body fit makes it an exc...
Black long-sleeve athletic shirt on a white background
$37.99
$37.99
Performance that moves with you. Designed for cold to very cold conditions and medium- to high-activity levels, the ColdPruf® Style 89A Performance Crew is a versatile base layer that can also be w...
5% Off
Black compression pants on a white background
$37.99
$37.99
$40.00
Performance that moves with you. Designed for cold to very cold conditions and medium- to high-activity levels, the ColdPruf® Style 89B Performance Pants deliver essential warmth, comfort, and flex...
Black leggings on a white background
$37.99
$37.99
$0.00
Performance that moves with you. The ColdPruf® Style 49B Performance Pants are designed for cold to very cold weather and medium- to high-activity levels. With a close athletic fit, they sit just b...
Black long-sleeve shirt on a white background
$48.00
$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...
Black long-sleeve shirt on a white background
$48.00
$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 ...
Black leggings on a white background
$49.00
$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
$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 black leggings on a white background Person wearing a black long-sleeve top and leggings on a white background
+2
+1
$115.00
$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...
Coldpruf Journey Single Layer Fleece Pant - Women's Silently Judging Gargoyle
+2
+1
$19.99
$19.99
$0.00
Regular fit pants Comfort waistband Front and back rise Single layer, lightweight fleece Rib cuffs Technology: 100% ColdPruf® Technical Fiber Polyester with SILVADUR™ Intelligent Freshness ...
24% Off
Black leggings on a white background
$25.99
$25.99
$34.00
jersey knit that locks in warmth by trapping air between the layers. These midweight base layer pants utilize Acclimate Dry hydrophobic yarns to effectively wick moisture away, keeping you dry and ...
24% Off
Black long-sleeve shirt on a white background
$25.99
$25.99
$34.00
Made with a special two-layer soft jersey knit, this Polarmax Double Layer thermal is sure to keep you warm when you need it most. The unique double layer construction of this women's crew neck bas...
24% Off
Black long-sleeve shirt on a white background
$25.99
$25.99
$34.00
Experience ultimate warmth with our men's thermal top, featuring a two-layer soft jersey knit and a unique double layer construction for superior thermal retention. The special Acclimate Dry hydrop...
24% Off
Navy blue leggings on a white background
$25.99
$25.99
$34.00
Experience exceptional warmth and comfort with our Men's Double Layer Bottoms. Featuring a unique two-layer soft jersey knit construction, these bottoms offer superior thermal insulation by trappin...
23% Off
Terramar ThermaSilk CS Silk Lightweight Long Sleeve Tall Crew Shirt - Men's
$49.99
$49.99
$65.00
The Miracle of SilkAfter 4000 years, nature and science have joined forces to produce silk long underwear which can help thermo-regulate the body's temperature and dramatically speed up the dispers...
Smartwool Women's Intraknit Thermal Merino Base Layer Crew Smartwool Women's Intraknit Thermal Merino Base Layer Crew
+4
+3
+2
+1
$130.00
$130.00
This minimalist-style crew is anything but insignificant. Our Women's Intraknit™ Thermal Merino Base Layer Crew is a lightweight, super-moveable top, made for all of your most extreme cold-weather ...
Smartwool Men's Active Ultralite Short Sleeve Shirt Smartwool Men's Active Ultralite Short Sleeve Shirt
+8
+7
+6
+5
+4
+3
from $50.00
from $50.00
Simple but practical, our Men’s Sport Ultralite Short Sleeve tee is soft yet functional, for all-day comfort and utility. Its super-light performance fabric—a blend of ZQ-certified Merino wool with...

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