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Base Layer

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25% Off
Terramar Thermawool Half-Zip - Women's
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$55.99
$55.99
$75.00
Terramar's Thermawool CS 3.0 half zip for Women represent Terramar’s highest thermal rating and are the optimal choice for regulating temperature. This half zip top is constructed with a blend of M...
27% Off
Terramar Below Zero Crew 3.0 Shirt - Women's Terramar Below Zero Crew 3.0 Shirt - Women's
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$39.99
$39.99
$55.00
The Below Zero Crew is the perfect piece to keep you warm. The extra durable four way stretch provides support and ease of movement in all directions as you move. The smooth face of the fabric is...
Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip
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$120.00
$120.00
We've updated the fit of our Women's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest base layer tops and one of our best b...
SmartWool Women's Classic Thermal Merino Base Layer Crew SmartWool Women's Classic Thermal Merino Base Layer Crew
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$115.00
$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...
50% Off
Man wearing a black long-sleeve shirt on a white background
$19.99
$19.99
$39.95
This form-fitting, lightweight top for men will help keep you warm and dry. Its wicking properties take moisture away from your body while the poly blend fibers help keep you warm. Active stretch a...
50% Off
Person wearing a black long-sleeve athletic shirt and leggings on a white background
$19.99
$19.99
$39.95
This form-fitting, super soft baselayer top for women will help keep you warm and dry. Its wicking properties take moisture away from your body while the poly blend fibers help keep you warm. Activ...
50% Off
Dark gray leggings with a brand logo on a white background
$19.99
$19.99
$39.95
This form-fitting, lightweight pant for men will help keep you warm and dry. Its wicking properties take moisture away from your body while the poly blend fibers help keep you warm. Active stretch ...
50% Off
Black leggings with a visible brand logo on a white background
$19.99
$19.99
$39.95
This form-fitting, super soft baselayer pant for women will help keep you warm and dry. Its wicking properties take moisture away from your body while the poly blend fibers help keep you warm. Acti...
33% Off
Three children wearing black wetsuits on a white background Child wearing a black long-sleeve shirt on a white background
$19.99
$19.99
$30.00
This form-fitting, lightweight base layer will help keep you warm and dry. Its wicking properties take moisture away from your body while the poly blend fibers help keep you warm. Active stretch an...
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
$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...
23% Off
Coldpruf Enthusiast Polypropylene Lightweight Tall Crew Shirt - Men's
$22.99
$22.99
$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...
27% Off
Woman wearing a black long-sleeve shirt on a white background
$39.99
$39.99
$55.00
The Below Zero Crew is the perfect piece to keep you warm. The extra durable four way stretch provides support and ease of movement in all directions as you move. The smooth face of the fabric is g...
27% Off
Terramar Men's Ecolator 3.0 Ecolator Pant
$39.99
$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
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$21.00
$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 Black thermal leggings with brand logos on a white background
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$32.99
$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...
Under Armour UA Base™ 2.0 Women's Leggings Under Armour UA Base™ 2.0 Women's Leggings
$60.00
$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...
Under Armour UA Base™ 2.0 Women's Crew Under Armour UA Base™ 2.0 Women's Crew
$60.00
$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...
Under Armour UA Base™ 2.0 Men's Crew Under Armour UA Base™ 2.0 Men's Crew
$60.00
$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...
Under Armour UA Base™ 2.0 Men's Leggings Under Armour UA Base™ 2.0 Men's Leggings
$60.00
$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
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
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$48.75
$48.75
$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...
25% Off
Person wearing a black long-sleeve top and red beanie on a light gray background Woman wearing a light purple long-sleeve athletic top on a white background
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$52.50
$52.50
$70.00
The super soft, half-zip that’s at home in the high alpine and casual days at lower elevations This perfect moisture-wicking base layer is buttery soft, allowing you to move effortlessly through an...
25% Off
Person wearing a black long-sleeve top and maroon puffer pants with a purple beanie on a light gray background Person wearing a purple long-sleeve shirt and green pants on a light gray background
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$45.00
$45.00
$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 ...
Woman wearing a blue and floral long-sleeve top on a white background Woman wearing a patterned long-sleeve top and leggings on a white background
$130.00
$130.00
Meet the Women's Classic Thermal Merino Base Layer Colorblock Crew. This 100% Merino wool fan-favorite combines the moisture management, temperature regulation, and odor resistance of Merino with t...
Woman wearing a dark brown long-sleeve top and black leggings on a light gray background Woman wearing a dark long-sleeve top and leggings on a light gray background
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$140.00
$140.00
Meet the Women's Classic Thermal Merino Mock Neck. This 100% Merino wool fan-favorite combines the moisture management, temperature regulation, and odor resistance of Merino with the comfort of an ...
Woman wearing a black long-sleeve athletic shirt on a white background Person wearing a black full-body suit on a white background
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$90.00
$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 ...
25% Off
Coldpruf Quest Performance Women's Crew Shirt
$29.99
$29.99
$40.00
The Holy Grail of base layers. Single-layer, jersey knit fabric Fabric Weight: 6.5 oz  Fiber Content: 85% ColdPruf® Technical Fiber Polyester with SILVADUR™ Intelligent Freshness / 15% Spandex...
25% Off
Mountain Hardwear Men's Butter Up™ Slim Pant Mountain Hardwear Men's Butter Up™ Slim Pant
$74.25
$74.25
$99.00
An alpine-inspired active slim pant that can be worn alone or as a base layer From high alpine trails to the climbing gym, the Butter™ Slim Pant is a versatile, buttery soft base layer that pairs p...
25% Off
Mountain Hardwear Men's Butter Up™ Long Sleeve Shirt Mountain Hardwear Men's Butter Up™ Long Sleeve Shirt
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$45.00
$45.00
$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 ...
VOORMI Women's Expedition 1/4 Zip Top VOORMI Women's Expedition 1/4 Zip Top
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$179.00
$179.00
VOORMI does it again with their Women's Expedition 1/4 Zip top! The 1/4 Zip boasts our innovative DUAL SURFACE™ Precision Blended Wool, a fabric that keeps your warm without compromising breathabil...
Voormi 1/4 Zip Mock Neck Voormi 1/4 Zip Mock Neck
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$129.00
$129.00
Now available in our Phase.SC™ concealment patterns, Blowdown and Harvest, the 1/4 Zip Mock Neck is the feather-light companion for folks on the move. Revel in comfort and style with this adaptable...
Smartwool Kids' Classic Thermal Merino Base Layer Crew Smartwool Kids' Classic Thermal Merino Base Layer Crew
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$65.00
$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...
Person wearing a navy and red sweater with black pants on a white background Person wearing a navy and red sweater with dark pants on a white background
$175.00
$175.00
Meet the Women's Alpine Crew—a premium 100% Merino wool base layer built for high-output performance in cold weather. Merino’s natural abilities to regulate temperature, wick moisture, and resist o...