Men's Underwear & Underlayers

For any outdoor activity, what you wear next to the skin can make all the difference to your comfort. At Decathlon you’ll find a range of breathable and insulating men’s underwear, underlayers and base layers to layer up correctly.
14 items
KIPSTA Adult Football Undershorts Keepcomfort - Black
KIPSTA Adult Football Undershorts Keepcomfort - White
Gallery item 1 out of 2
KIPSTA Adult Football Undershorts Keepcomfort - Black
Rate: 4.6 stars, 353 votes
2 colors
£7.99
Was £9.99
GUNN AND MOORE GM Cricket Batting Boxer Short Adult
GUNN AND MOORE GM Cricket Batting Boxer Short Adult
Rate: 5.0 stars, 1 votes
£11.99
KIPSTA Adult Football Undershorts Keepdry 500 - White
KIPSTA Adult Football Undershorts Keepdry 500 - Orange
KIPSTA Adult Football Undershorts Keepdry 500 - Green
KIPSTA Adult Football Undershorts Keepdry 500 - Indigo Blue
KIPSTA Adult Football Undershorts Keepdry 500 - Red
KIPSTA Adult Football Undershorts Keepdry 500 - Black
KIPSTA Adult Football Undershorts Keepdry 500 - Yellow
KIPSTA Adult Football Undershorts Keepdry 500 - Navy Blue
KIPSTA Adult Football Undershorts Keepdry 500 - Purple
Gallery item 1 out of 9
KIPSTA Adult Football Undershorts Keepdry 500 - White
Rate: 4.5 stars, 188 votes
9 colors
£14.99
Was £19.99
STANNO Stanno Equip Protection Shorts
STANNO Stanno Equip Protection Shorts
Sold and shipped by Just Keepers Ltd
£34.00
STORELLI STORELLI BODYSHIELD IMPACT SLIDERS
STORELLI STORELLI BODYSHIELD IMPACT SLIDERS
Sold and shipped by Just Keepers Ltd
£40.00
ROCKRIDER Refurbished Mens Mountain Bike Undershorts - A Grade
ROCKRIDER Refurbished Mens Mountain Bike Undershorts - A Grade
Sold and shipped by Decathlon UK - Second Life
£16.19£17.99
KIPSTA Refurbished Adult Football Undershorts Keepcomfort -B Grade
KIPSTA Refurbished Adult Football Undershorts Keepcomfort -B Grade
Sold and shipped by Decathlon UK - Second Life
£7.99£9.99
ROCKRIDER Refurbished Mountain Biking All-mountain Enduro Protective Undershorts - C Grade
ROCKRIDER Refurbished Mountain Biking All-mountain Enduro Protective Undershorts - C Grade
Sold and shipped by Decathlon UK - Second Life
£41.99£59.99
ROCKRIDER Mountain Biking Undershorts with Straps EXPL 700 - Black
ROCKRIDER Mountain Biking Undershorts with Straps EXPL 700 - Black
Rate: 4.3 stars, 12 votes
£34.99
BARNETT Compression shorts, 5 integrated pieces, American football FS-06
BARNETT Compression shorts, 5 integrated pieces, American football FS-06
Sold and shipped by BARNETT SA UK
£44.00
KIPSTA Men's Football Undershorts Keepdry 500 - Dark Blue
KIPSTA Men's Football Undershorts Keepdry 500 - Indigo Blue
Gallery item 1 out of 2
KIPSTA Men's Football Undershorts Keepdry 500 - Dark Blue
Rate: 4.5 stars, 373 votes
2 colors
£8.99£14.99
KIPSTA Men's Base Layer Shorts Keepdry 900 Supportiv - Black
KIPSTA Keepenergy Adult Under shorts - Black
Gallery item 1 out of 2
KIPSTA Men's Base Layer Shorts Keepdry 900 Supportiv - Black
Rate: 4.3 stars, 220 votes
2 colors
£13.99
Out of stock
OLAIAN Kola Men's Base Layer Shorts - Blue
OLAIAN Kola Men's Base Layer Shorts - Blue
Rate: 4.5 stars, 437 votes
£4.99
Out of stock
ROCKRIDER Gel-Padded Mountain Bike Under-Shorts - Black
ROCKRIDER Gel-Padded Mountain Bike Under-Shorts - Black
Rate: 4.2 stars, 1083 votes
£27.99
Out of stock
4.5/5 based on 2667 reviews collected online and in stores

Underwear you can wear to run, jump and play

Welcome to Decathlon's men's innerwear and thermals page. No matter if you do sport every day or occasionally we have the right clothes and equipment to meet your needs. Our men's innerwear and thermals are designed for different sports and intensity. Discover the range for cycling, running, skiing, football and other sports now.