Men's Base Layers & Thermal Underwear

Men's Base Layers & Thermal Underwear

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Men's Ski Base Layer Bottoms - BL 500 - Black, Image of
Men's Ski Base Layer Bottoms - BL 500 - Black, Image of
Decathlon Wedze

Men's Ski Base Layer Bottoms - BL 500 - Black

(Average rating: 4.74 out of 5 stars, 1237 Reviews)

Regular price, $19.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Wedze Men's BL 500 Thermal Ski Base Layer, Image of
Wedze Men's BL 500 Thermal Ski Base Layer, Image of
Decathlon Wedze

Wedze Men's BL 500 Thermal Ski Base Layer

(Average rating: 4.73 out of 5 stars, 3013 Reviews)

Regular price, $19.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt, Image of
Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt, Image of
Decathlon Forclaz

Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt

(Average rating: 4.55 out of 5 stars, 860 Reviews)

Regular price, $79.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Forclaz Men's Mountain Backpacking Merino Wool Base Layer Tights Leggings - MT900, Image of
Forclaz Men's Mountain Backpacking Merino Wool Base Layer Tights Leggings - MT900, Image of
Decathlon Forclaz

Forclaz Men's Mountain Backpacking Merino Wool Base Layer Tights Leggings - MT900

(Average rating: 4.68 out of 5 stars, 120 Reviews)

Regular price, $99.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Forclaz Men's MT900 Merino Wool Long-sleeve Shirt, Image of
Forclaz Men's MT900 Merino Wool Long-sleeve Shirt, Image of
Decathlon Forclaz

Forclaz Men's MT900 Merino Wool Long-sleeve Shirt

(Average rating: 4.67 out of 5 stars, 639 Reviews)

Regular price, $99.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Wedze Men's BL100 Base Layer Top, Image of
Wedze Men's BL100 Base Layer Top, Image of
Decathlon Wedze

Wedze Men's BL100 Base Layer Top

(Average rating: 4.63 out of 5 stars, 12510 Reviews)

Regular price, $9.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Wedze M Ski Thermal Base Layer Bottoms - BL 100 - Black, Image of
Wedze M Ski Thermal Base Layer Bottoms - BL 100 - Black, Image of
Decathlon Wedze

Wedze M Ski Thermal Base Layer Bottoms - BL 100 - Black

(Average rating: 4.59 out of 5 stars, 6155 Reviews)

Regular price, $9.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Forclaz Men's Mountain Backpacking Merino Wool Base Layer Tights Leggings - MT500, Image of
Forclaz Men's Mountain Backpacking Merino Wool Base Layer Tights Leggings - MT500, Image of
Decathlon Forclaz

Forclaz Men's Mountain Backpacking Merino Wool Base Layer Tights Leggings - MT500

(Average rating: 4.57 out of 5 stars, 707 Reviews)

Regular price, $79.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product
Forclaz Men's Mountain Backpacking Merino Wool Boxer Shorts MT500, Image of
Forclaz Men's Mountain Backpacking Merino Wool Boxer Shorts MT500, Image of
Decathlon Forclaz

Forclaz Men's Mountain Backpacking Merino Wool Boxer Shorts MT500

(Average rating: 4.44 out of 5 stars, 1340 Reviews)

Regular price, $34.99 Regular price, $9,999,999.99

Limited Sizes

Free shipping over $49

See shipping rate at checkout

About Our Men's Base Layers

Heading into cold weather? Whether you’re going out to ski or you’re on your next cycling adventure, Decathlon’s base layers have got you covered. 

Ski Base Layers

Our ski base layers are warm, featuring a brushed material that also allows for breathability and moisture wicking. Some even feature odor control so you can always feel fresh on your runs! Don’t worry, all of our ski base layers are perfect for snowboarding, too!

Cycling Base Layers

Our cycling base layers are engineered with quick-drying technology and are made to be ultra lightweight so they don’t weigh you down on your travels. The moisture wicking properties of our high-tech fabric ensure a comfortable ride from start to finish. And don’t worry, the material moves with you so you’ll never feel constrained while you’re on the road.

Sport Base Layers

Looking to play soccer? Do a few rounds of golf on your favorite green? We have base layers for a variety of other sports as well! We design for men, women, and kids.