Lightweight Long Underwear

Stay warm and comfortable with our collection of lightweight long underwear, designed for optimal layering in any season. Crafted from breathable, moisture-wicking materials, these essentials provide a snug fit without adding bulk. Perfect for outdoor adventures or cozy days indoors, our lightweight long underwear offers flexibility and warmth. Choose from a variety of styles that ensure you stay active while maintaining comfort. Elevate your cold-weather wardrobe with these versatile pieces that keep you feeling great, no matter the temperature.

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6 products
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Smartwool Men's Classic Thermal Merino Base Layer Bottoms
  • Black

Smartwool Men's Classic Thermal Merino Base Layer Bottoms

$125.00

(6)

Perfect weight to stay warm in cold weather. ... I love how they keep me warm but do n't make me hot. ... He said the fit was true to size and they kept him warm while snowmobiling and

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5 tjflan2
Fit true and worked outstanding as base layer for football game. Very comfortable and breathable.

5 Mountain time
Fit great especially in length. Perfect weight to stay warm in cold weather.

5 Kwhendy
Bought these about a week ago and wear them nearly every day. I love how they keep me warm but do n't make me hot.

5 srgmnh
These really are a step above. Great fabric, great warmth, hold their shape well. Worth every penny.

4 Jdub
Smart wool has always made quality products and these are no different. But… awfully pricey for a pair of long Johns!

Halfdays Women's Ruth Lightweight Merino Leggings

Halfdays Women's Ruth Lightweight Merino Leggings

$115.00

(15)

Fits comfortably and looks great! ... The merino wool provides that sweat wicking warmth that is so necessary for a base layer in skiing. ... They 're so comfy and warm and stay

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5 Julia
Beutiful set. Soft, breathable. Love the color. It doesn ’ t compress your body or stomach

5 Trixie
Very comfortable, warm and lightweight. I would recommend!

5 Mandy C.
Fits comfortably and looks great! Really glad I found this brand.

5 Kate
My new favorite base layers! They fit like a glove and keep me so warm in even the coldest conditions. Obsessed with the Alpine color, so cute!

5 Sam
My absolute favourite base layers. Wish I could live in these legging.

Halfdays Women's Clare Lightweight Merino Top

Halfdays Women's Clare Lightweight Merino Top

$115.00

(22)

It is also super comfortable to ski in! ... [ I really like how soft the shirt is! ... Just your sleek black winter staple top that is also functional! ... I ’ m completely hooked and will never buy any other brand of base layers from now

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5 Trixie
This was so comfortable, lightweight and very warm. I would definitely recommend!

5
Fabulous secure fit in a light weight feel good fabric.

5 Kate
The absolute BEST base layers! I ’ m completely hooked and will never buy any other brand of base layers from now on. They ’ re buttery soft and keep me warm( and stylish) on the slopes! 🩷

5 Jessica
This top is so cozy! The turtle line neck is perfect and keep you warm on the mountain.

5 SPow
This is my second Clare top. It's been amazing so far! I 've worn it on some tough hikes and was so impressed that it stayed warm and dry. So comfortable and also cute enough to wear around after. Halfdays team, I wish it had thumb holes. Then it would be perfect.

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