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.
891 items
ODLO ODLO Men's Blackcomb Base Layer
ODLO ODLO Men's Blackcomb Base Layer
Sold and shipped by Baselayer Ltd
£70.00
ADIDAS Ajax Amsterdam 23/24 Away Socks
ADIDAS Ajax Amsterdam 23/24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
ROOKIE 16'' Mid Calf Socks
ROOKIE 16'' Mid Calf Socks
Sold and shipped by Kates Skates Ltd
£9.95
ODLO ODLO Men's Blackcomb Base Layer
ODLO ODLO Men's Blackcomb Base Layer
Sold and shipped by Baselayer Ltd
£70.00
ODLO ODLO Men's Blackcomb Base Layer
ODLO ODLO Men's Blackcomb Base Layer
Sold and shipped by Baselayer Ltd
£70.00
AKRON Akron Men's Moon Brief - Blue
AKRON Akron Men's Moon Brief - Blue
Sold and shipped by ProSwimwear LTD
£17.99
SPEEDO Speedo Kaleidoscope 17cm Brief - Black/ Blue/ Adriatic/ Tangerine
SPEEDO Speedo Kaleidoscope 17cm Brief - Black/ Blue/ Adriatic
SPEEDO Speedo Kaleidoscope 17cm Brief - Black/ Blue/ Adriatic/ Tangerine
Gallery item 1 out of 3
SPEEDO Speedo Kaleidoscope 17cm Brief - Black/ Blue/ Adriatic/ Tangerine
3 colors
Sold and shipped by ProSwimwear LTD
£27.99
ADIDAS Golf Ankle Socks 3 Pairs
ADIDAS Golf Ankle Socks 3 Pairs
Gallery item 1 out of 2
ADIDAS Golf Ankle Socks 3 Pairs
2 colors
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£12.00
TYR TYR Men's Durafast Elite Solid Racer Brief - Navy
TYR TYR Men's Durafast Elite Solid Racer Brief - Navy
Sold and shipped by ProSwimwear LTD
£8.99
AKRON Akron Men's Element Air Brief - Blue
AKRON Akron Men's Element Air Brief - Blue
Sold and shipped by ProSwimwear LTD
£17.99
AKRON Akron Men's Roman Brief - Yellow
AKRON Akron Men's Roman Brief - Yellow
Sold and shipped by ProSwimwear LTD
£17.99
ADIDAS Crew Golf Socks 3 Pairs
ADIDAS Crew Golf Socks 3 Pairs
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£15.00
AKRON Akron Men's Chess Brief
AKRON Akron Men's Chess Brief
Sold and shipped by ProSwimwear LTD
From £18.99
ADIDAS Spain 24 Away Socks
ADIDAS Spain 24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
SURFANIC Bodyfit Limited Edition Zip Neck Geo Camo
SURFANIC Bodyfit Limited Edition Zip Neck Geo Camo
Sold and shipped by Surfanic
£18.00£40.00
SPEEDO Speedo Latex Sock - White
SPEEDO Speedo Latex Sock - White
Sold and shipped by Bowls4u T/A 4U Trading Group
£10.40
AKRON Akron Men's Adi Three Brief - Purple / Green
AKRON Akron Men's Adi Three Brief - Purple / Green
Sold and shipped by ProSwimwear LTD
£18.99
ADIDAS Juventus 23/24 Away Socks
ADIDAS Juventus 23/24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
TCA Men's CarbonForce Quick Dry Base Layer Compression Shorts - Black Stealth
TCA Men's CarbonForce Quick Dry Base Layer Compression Shorts - Black Stealth
Sold and shipped by Thorogood Sports Ltd
£14.99£19.99
ODLO ODLO Men's Blackcomb Base Layer
ODLO ODLO Men's Blackcomb Base Layer
Sold and shipped by Baselayer Ltd
£70.00
ADIDAS Golf Ankle Socks 3 Pairs
ADIDAS Golf Ankle Socks 3 Pairs
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£12.00
ADIDAS Italy 24 Home Socks
ADIDAS Italy 24 Home Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
TYR TYR Men's Phoenix Splice Racer Briefs - Black/ Blue
TYR TYR Men's Phoenix Splice Racer Briefs - Black/ Blue
Sold and shipped by ProSwimwear LTD
£9.99
AKRON Akron Men's Adi Seven Brief - Yellow / Purple
AKRON Akron Men's Adi Seven Brief - Yellow / Purple
Sold and shipped by ProSwimwear LTD
£26.99
ADIDAS Italy 24 Away Socks
ADIDAS Italy 24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
AKRON Akron Men's Save The Lion Brief
AKRON Akron Men's Save The Lion Brief
Sold and shipped by ProSwimwear LTD
£19.99
AKRON Akron Men's Graffiti Brief
AKRON Akron Men's Graffiti Brief
Sold and shipped by ProSwimwear LTD
£23.99
ARENA Arena Crazy Placement Low Waist Short - Black/Multi
ARENA Arena Crazy Placement Low Waist Short - Black/Multi
Sold and shipped by ProSwimwear LTD
From £29.99
HILLY Hilly Marathon Fresh Anklet Min Socks
HILLY Hilly Marathon Fresh Anklet Min Socks
Sold and shipped by Rugby Heaven
£15.00
ADIDAS Germany 24 Away Socks
ADIDAS Germany 24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
ADIDAS FC Bayern 23/24 Away Socks
ADIDAS FC Bayern 23/24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
AKRON Akron Men's Adi Four Brief - Yellow / Blue
AKRON Akron Men's Adi Four Brief - Yellow / Blue
Sold and shipped by ProSwimwear LTD
£26.99
ADIDAS Germany 24 Home Socks
ADIDAS Germany 24 Home Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
ODLO ODLO Men's Blackcomb Eco Warm Leggings
ODLO ODLO Men's Blackcomb Eco Warm Leggings
Sold and shipped by Baselayer Ltd
£65.00
ODLO ODLO Men's Blackcomb Base Layer
ODLO ODLO Men's Blackcomb Base Layer
Sold and shipped by Baselayer Ltd
£70.00
ADIDAS Juventus 23/24 Home Socks
ADIDAS Juventus 23/24 Home Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
PUMA Puma Short Crew Socks (3 Pairs)
PUMA Puma Short Crew Socks (3 Pairs)
PUMA Puma Short Crew Socks (3 Pairs)
PUMA Puma Short Crew Socks (3 Pairs)
Gallery item 1 out of 4
PUMA Puma Short Crew Socks (3 Pairs)
Rate: 5.0 stars, 1 votes
4 colors
Sold and shipped by Bowls4u T/A 4U Trading Group
£10.58
TCA Men's Performance Base Layer Compression Shorts - Blueprint
TCA Men's Performance Base Layer Compression Shorts - Forest Night
TCA Men's Performance Base Layer Compression Shorts - Black Stealth
TCA Men's Performance Base Layer Compression Shorts - Grey Marl
TCA Men's Performance Base Layer Compression Shorts - Cabernet
TCA Men's Performance Base Layer Compression Shorts - White
TCA Men's Performance Base Layer Compression Shorts - Navy Eclipse
TCA Men's Performance Base Layer Compression Shorts - Pro White
Gallery item 1 out of 8
TCA Men's Performance Base Layer Compression Shorts - Blueprint
Rate: 3.4 stars, 5 votes
8 colors
Sold and shipped by Thorogood Sports Ltd
£18.99
GILBERT Training II Socks, Green
GILBERT Training II Socks, White
GILBERT Training II Socks, Red
GILBERT Training II Socks, Black
GILBERT Training II Socks, Dark Navy
GILBERT Training II Socks, Red
GILBERT Training II Socks, Green
GILBERT Training II Socks, Royal
GILBERT Training II Socks, White
Gallery item 1 out of 9
GILBERT Training II Socks, Green
9 colors
Sold and shipped by Bowls4u T/A 4U Trading Group
£13.40
PUMA Puma Quarter Training Socks (3 Pairs)
PUMA Puma Quarter Training Socks (3 Pairs)
PUMA Puma Quarter Training Socks (3 Pairs)
PUMA Puma Quarter Training Socks (3 Pairs)
Gallery item 1 out of 4
PUMA Puma Quarter Training Socks (3 Pairs)
4 colors
Sold and shipped by Bowls4u T/A 4U Trading Group
£10.58
4.5/5 based on 439548 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.