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Hot Chillys Clima Tek shorts
Hot Chillys Clima-Tek ee and Shorts

Chill out in Hot Chillys

Clima-Tek has your back all year long
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Hot Chillys Clima-Tek Hoodie
Matte Hanna - Hot Chillys Clima-Tek Hoodie waves and rocks

Coastal Chill,
Hot Chillys style.

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Hot Chillys 1990s OG Base Layers

It all started in 1985

Hot Chillys revolutionized the ski market with performance ski "warm wear" (now base layer) incorporating fabric technologies previously found primarily in running apparel.
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25% Off Sale

Sale on Summer styles and last season's colors. Discounted price shows in cart.

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woman hiking in Hot Chillys Thermal Base Layers

Women's Base Layers

Our  women’s base layers go a step beyond the features of our basic black under layers by adding a flair for fun and expression with prints, patterns, and color! Hot Chillys supports your wild side, so choose your favorite from our women's thermal base layers, tops, bottoms, and socks.
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Hot Chillys Mens ZipT in the Snow

Men's Base Layers

Engineered with performance in mind, our men's base layers will keep you dry, warm, and very comfortable, so you can concentrate on having a good time outdoors. With Hot Chillys base layers for men, you can conquer the coldest temperatures while still enjoying your time outdoors.
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Youth Thermal Base Layers

Youth & Kids Base Layers

Focusing on comfort and performance, Hot Chillys' uses the same technical properties on our kid’s thermals as our adult base layer collections. 'Cuz kids want to stay warm, dry, and comfortable so that they can have fun, too!
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Hot Chillys Elite Heat Sock Yellowstone North Entrance

Winter Sport Socks

Designed for cold-weather performance and everyday comfort, Hot Chillys Socks are your go-to layer for keeping feet warm, dry, and supported. Crafted with moisture-wicking fibers and a soft, insulating blend, these socks help regulate temperature so no one has to worry about their feet.
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Thermal Layers Beanies youth in the snow

Beanies & Gaiters

Soft, breathable, and built for warmth—Hot Chillys beanies and gaiters lock in heat and keep out the chill, whether you're on the mountain or on the move.
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Face Protection

Engineered for high-output cold-weather activity, Hot Chillys masks feature moisture-wicking, quick-dry performance fabrics that keep you warm without overheating.
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It all started in 1985, when Hot Chillys introduced the first body fit Thermal Base Layers. Hot Chillys revolutionized the ski market with performance ski "warm wear" (base layer underwear) incorporating fabric technologies previously found primarily in running apparel.
It all started in 1985, when Hot Chillys introduced the first body fit Thermal Base Layers. Hot Chillys revolutionized the ski market with performance ski "warm wear" (base layer underwear) incorporating fabric technologies previously found primarily in running apparel.

All season layers

Hot Chillys Women's Clima-Tek Zip T
Our most versatile layers

Clima-Tek Cold Weather Base Layers
High-performance thermals for families designed for outdoor adventures in cold weather, featuring durable base layers.
Activewear in adult & youth sizes

High-Performance Thermals

Let customers speak for us

from 83 reviews
Best cold weather turtle neck.

I have bought these for years! Love the warmth and no bulk.

DIANE PERLMAN
Women's Peach Skins Solid T-Neck - Lagoon
Better than expected

This shirt was for my husband an avid cyclist and contractor for biz and said this has to be the best shirt I’ve worn. ( trust me…he owns many of the big name brands) He said most shirts you get hot in at some point (cotton and tech) but this fabric not only feels amazing it’s so breathable! Keeping him comfortable and dry all day. He’s just ordered the hoodie and another T shirt.

Patti Fisher
Men's Clima-Tek Crewneck - OD Heather
Great T-neck for cold days

I bought this for next season so haven't worn it yet, but the quality is very nice, I like the chamois inside and it's nice and thick for winter sports. I like that the zipper has an extra flap to protect the chin from chafing. I will wait for the white to come back in stock - hopefully this fall.

Carol Hundert
Women's Micro-Elite Chamois Solid Zip-T - Black
Comfortable

Very comfortable and great quality

Cesar Nascimento
Men's Classic Mid Volume Sock - Black/Heather
Awesome fit

I look forward to wearing this baselayer during my trip to Antarctica as it is soft, warm, and comfortable.

Linda Shemely
Women's Micro-Elite Chamois Crewneck - Black
So soft!

I tried on these tights...so soft and comfortable! I look forward to using them on my trip to Antarctics.

Linda Shemely
Women's Micro-Elite Chamois Tight - Black
Review of balaclava pt 2

… this thing keeps getting better! I didn’t even know this thing had a hole for a pony tail! If I could give this thing more stars I would. Perfection.

Carrie
Women's Balaclava Hoodie - Black
Had to buy these :)

I had purchased the top separately and loved it, so I purchased the matching pants, and love them as well. A smooth and snug fit. You will not be disappointed!

Bruce D.
Men's 3D Knit Bottom - Black
Warm and comfortable

I bought a set (top, bottom and socks). To take on a Kansas Late Season goose hunt. They were VERY comfortable and soft against my skin and kept me warm while laying in my layout blind. Very happy with my selection.

Steve Junge
Men's La Montaña Fleece Bottom - Black
mask

I returned this item because it felt too tight on my face

Susan Heard
Chil-Gard Micro-Elite Chamois Solid Half Mask - Granite
Great product

I wear a medium and it was very tight. Going to gift it to. Daughter in law.

Peggy Seale
Women's Balaclava Hoodie - Aerial Blue
Perfect layer for everything!

I wear this as a base layer for downhill, Xc ski, running even walking the dog! Brilliant all in one hood, face mask and cozy fuzzy inside, like the hand of this even better than my R1 Patagonia. Wore it for 7 days straight without washing and never got smelly.

Carrie
Women's Micro-Elite Chamois Pocket Legging - Black
Love

They are cozy on the inside and slick on the outside! Love them. Skiing in 20 degree weather and didn’t get cold at all.

Krista Martinez
Women's Micro-Elite Chamois Crewneck - White
Great addition to my cold weather gear

Great to stay warm and layer as needed. Fit allows you to have a true moisture wicking base layer and allows you to add this for warmth without bulk so you can add another insulating or just outer shell.

Rudy Argueta
Men's La Montaña Fleece Zip T - Black/Black
Hands down the best

Bought a full set of La Montana about 14 years ago. By far, it is the warmest and most comfortable underlayer I have ever worn. My teenager has recently taken possession of them and I know that I will not get them back. Therefore, I am preparing to order another set.

Doug J
Men's La Montaña Fleece Zip T - Black/Black

Check out our Bestsellers

Try one. Love it. Rinse, repeat.

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It all started in 1985, when Hot Chillys introduced the first body fit Thermal Base Layers.

Hot Chillys revolutionized the ski market with performance ski "warm wear" (base layer underwear) incorporating fabric technologies previously found primarily in running apparel.

Check out Chillys
Shop Youth

Add some spice

Shop Fiesta
Shop Micro-Elite Chamois

Base Layer Tips

snow play slope winter scene
How to Choose the Right Size for Youth Thermal Clothing

How to Choose the Right Size for Youth Thermal Clothing When it comes to keeping our kids warm in chilly...

Staying Cool and Protected: The Surprising Benefits of Thermal Base Layers for Summer
Staying Cool and Protected: The Surprising Benefits of Thermal Base Layers for Summer

As the temperatures rise and the sun beats down, it's easy to assume that thermal base layers are only for...

Man hiking on a mountain
Stay Warm in the Coldest Temperatures with Hot Chillys' Thermal Base Layers

As the temperatures start to drop and the winter chill sets in, it's time to start thinking about how to...

snow play slope winter scene
How to Choose the Right Size for Youth Thermal Clothing

How to Choose the Right Size for Youth Thermal Clothing When it comes to keeping our kids warm in chilly...

Staying Cool and Protected: The Surprising Benefits of Thermal Base Layers for Summer
Staying Cool and Protected: The Surprising Benefits of Thermal Base Layers for Summer

As the temperatures rise and the sun beats down, it's easy to assume that thermal base layers are only for...

Man hiking on a mountain
Stay Warm in the Coldest Temperatures with Hot Chillys' Thermal Base Layers

As the temperatures start to drop and the winter chill sets in, it's time to start thinking about how to...

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