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.
892 items
UMBRO Diamond Football Socks (White/Black)
UMBRO Diamond Football Socks (Emerald/White)
UMBRO Diamond Football Socks (Vermillion/White)
UMBRO Diamond Football Socks (Sky Blue/White)
UMBRO Diamond Football Socks (Shocking Orange/Black)
UMBRO Diamond Football Socks (Purple Cactus/White)
UMBRO Diamond Football Socks (Green Gecko/Black)
UMBRO Diamond Football Socks (Yellow/Black)
UMBRO Diamond Football Socks (Carbon/White)
UMBRO Diamond Football Socks (Blazing Yellow/Carbon)
UMBRO Diamond Football Socks (Royal Blue/White)
UMBRO Diamond Football Socks (New Claret/White)
UMBRO Diamond Football Socks (Beetroot Purple/Black)
Gallery item 1 out of 13
UMBRO Diamond Football Socks (White/Black)
13 colors
Sold and shipped by Pertemba GB
£11.49
PLANKS Planks Men's Fall-Line Base Layer Top in Black - Long Sleeve Fitness T-Shirt
PLANKS Planks Men's Fall-Line Base Layer Top in Black - Long Sleeve Fitness T-Shirt
Sold and shipped by Planks Clothing
£60.00
REGATTA Mens Pro Assorted Designs Boot Socks Set (Pack of 2) (Blue/Black)
REGATTA Mens Pro Assorted Designs Boot Socks Set (Pack of 2) (Blue/Black)
Sold and shipped by Pertemba GB
£6.99
DUNLOP Mens Sticklebarn Trainer Socks (Pack of 5) (White)
DUNLOP Mens Sticklebarn Trainer Socks (Pack of 5) (White)
Sold and shipped by Pertemba GB
£13.49
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black w/Red)
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black w/Navy)
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Multicolour)
Gallery item 1 out of 3
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black w/Red)
3 colors
Sold and shipped by aZengear
£12.95£14.95
WEATHERBEETA Unisex Adult Prime Knee High Socks (Violet)
WEATHERBEETA Unisex Adult Prime Knee High Socks (Violet)
Sold and shipped by Pertemba GB
£10.49
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (Pink/Grey/Charcoal Grey)
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (Black/Red/Grey)
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (Navy/Black/Light Grey)
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (Grey)
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (Pink)
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (Black)
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (White)
Gallery item 1 out of 7
PUMA Unisex Adult Quarter Training Ankle Socks (Pack of 3) (Pink/Grey/Charcoal Grey)
7 colors
Sold and shipped by Pertemba GB
£10.49
CRAGHOPPERS Unisex Light Antibac Sck
CRAGHOPPERS Unisex Light Antibac Sck
Sold and shipped by Official Craghoppers UK Ltd.
£7.95£12.00
PUMA Unisex Adult Cushioned Trainer Socks (Pack Of 3) (White/Black)
PUMA Unisex Adult Cushioned Trainer Socks (Pack Of 3) (Black/White)
Gallery item 1 out of 2
PUMA Unisex Adult Cushioned Trainer Socks (Pack Of 3) (White/Black)
2 colors
Sold and shipped by Pertemba GB
£11.49
DARE 2B Mens Hex Athleisure Ankle Socks (Orion Grey/Burnt Salmon)
DARE 2B Mens Hex Athleisure Ankle Socks (Black/Orion Grey)
Gallery item 1 out of 2
DARE 2B Mens Hex Athleisure Ankle Socks (Orion Grey/Burnt Salmon)
2 colors
Sold and shipped by Pertemba GB
£6.49
MURPHYS Unisex Adult Pro Mid GAA Socks (Green/Gold)
MURPHYS Unisex Adult Pro Mid GAA Socks (Royal Blue/White)
MURPHYS Unisex Adult Pro Mid GAA Socks (Red/White)
MURPHYS Unisex Adult Pro Mid GAA Socks (Black/White)
MURPHYS Unisex Adult Pro Mid GAA Socks (Green/White)
MURPHYS Unisex Adult Pro Mid GAA Socks (Black/Red)
Gallery item 1 out of 6
MURPHYS Unisex Adult Pro Mid GAA Socks (Green/Gold)
6 colors
Sold and shipped by Pertemba GB
£11.49
CRAGHOPPERS Unisex Light Antibac Sck
CRAGHOPPERS Unisex Light Antibac Sck
Sold and shipped by Official Craghoppers UK Ltd.
£7.95£12.00
FITNESS-MAD Unisex Adult Releve Dance Half Toe Socks (Black)
FITNESS-MAD Unisex Adult Releve Dance Half Toe Socks (Black)
Sold and shipped by Pertemba GB
£14.49
CRAGHOPPERS Trek Sock
CRAGHOPPERS Trek Sock
CRAGHOPPERS Trek Sock
CRAGHOPPERS Trek Sock
Gallery item 1 out of 4
CRAGHOPPERS Trek Sock
4 colors
Sold and shipped by Official Craghoppers UK Ltd.
£17.95£18.00
1000 MILE Mens Liner Socks (Black)
1000 MILE Mens Liner Socks (White)
Gallery item 1 out of 2
1000 MILE Mens Liner Socks (Black)
2 colors
Sold and shipped by Pertemba GB
£12.49
PUMA Mens Quarter Socks (Pack of 3) (White)
PUMA Mens Quarter Socks (Pack of 3) (White)
Sold and shipped by Pertemba GB
£11.49
CRAGHOPPERS Men's Heat Regulating Travel Sock
CRAGHOPPERS Men's Heat Regulating Travel Sock
Gallery item 1 out of 2
CRAGHOPPERS Men's Heat Regulating Travel Sock
2 colors
Sold and shipped by Official Craghoppers UK Ltd.
£11.95£18.00
DUNLOP Mens Osterley Trainer Socks (Pack of 3) (White)
DUNLOP Mens Osterley Trainer Socks (Pack of 3) (White)
Sold and shipped by Pertemba GB
£11.49
PUMA Unisex Adult Heritage Stripe Crew Socks (Pack of 2) (White/Black)
PUMA Unisex Adult Heritage Stripe Crew Socks (Pack of 2) (Black/White)
Gallery item 1 out of 2
PUMA Unisex Adult Heritage Stripe Crew Socks (Pack of 2) (White/Black)
2 colors
Sold and shipped by Pertemba GB
£10.49
DARE 2B Unisex Adult Essentials Ankle Socks (Pack of 2) (Black)
DARE 2B Unisex Adult Essentials Ankle Socks (Pack of 2) (White)
DARE 2B Unisex Adult Essentials Ankle Socks (Pack of 2) (Ebony Grey)
Gallery item 1 out of 3
DARE 2B Unisex Adult Essentials Ankle Socks (Pack of 2) (Black)
3 colors
Sold and shipped by Pertemba GB
£9.99
UMBRO Mens Protex Gripped Ankle Socks (Sky Blue/New Claret)
UMBRO Mens Protex Gripped Ankle Socks (Royal Blue)
UMBRO Mens Protex Gripped Ankle Socks (White/Black)
UMBRO Mens Protex Gripped Ankle Socks (Vermillion)
UMBRO Mens Protex Gripped Ankle Socks (New Claret)
UMBRO Mens Protex Gripped Ankle Socks (Navy)
UMBRO Mens Protex Gripped Ankle Socks (Black)
Gallery item 1 out of 7
UMBRO Mens Protex Gripped Ankle Socks (Sky Blue/New Claret)
7 colors
Sold and shipped by Pertemba GB
£19.49
CANTERBURY Mens Playing Rugby Sport Socks (White)
CANTERBURY Mens Playing Rugby Sport Socks (Navy)
CANTERBURY Mens Playing Rugby Sport Socks (Black)
CANTERBURY Mens Playing Rugby Sport Socks (Red)
Gallery item 1 out of 4
CANTERBURY Mens Playing Rugby Sport Socks (White)
4 colors
Sold and shipped by Pertemba GB
£17.49
PUMA Unisex Adult Quarter Socks (Black)
PUMA Unisex Adult Quarter Socks (White)
Gallery item 1 out of 2
PUMA Unisex Adult Quarter Socks (Black)
2 colors
Sold and shipped by Pertemba GB
£11.49
1000 MILE Mens Approach Socks (Charcoal)
1000 MILE Mens Approach Socks (Navy)
Gallery item 1 out of 2
1000 MILE Mens Approach Socks (Charcoal)
2 colors
Sold and shipped by Pertemba GB
£15.49
ELLESSE ELLESSE MEN'S 6PK CREW SOCKS
ELLESSE ELLESSE MEN'S 6PK CREW SOCKS
Gallery item 1 out of 2
ELLESSE ELLESSE MEN'S 6PK CREW SOCKS
2 colors
Sold and shipped by Orrsum
£19.99
DARE 2B Unisex Adult Socks (Pack of 2) (Puffins Orange/Black)
DARE 2B Unisex Adult Socks (Pack of 2) (Puffins Orange/Black)
Sold and shipped by Pertemba GB
£9.49
HO SOCCER HO Soccer Raven Padded GK Tight Shorts
HO SOCCER HO Soccer Raven Padded GK Tight Shorts
Sold and shipped by Just Keepers Ltd
£30.00
1000 MILE Mens Lite Recycled Ankle Socks (Silver/Royal Blue)
1000 MILE Mens Lite Recycled Ankle Socks (Silver/Royal Blue)
Sold and shipped by Pertemba GB
£13.49
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black)
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(White)
Gallery item 1 out of 2
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black)
2 colors
Sold and shipped by aZengear
£12.95£14.95
DARE 2B Unisex Adult Ambling Walking Socks (Lichen Green)
DARE 2B Unisex Adult Ambling Walking Socks (Pelican)
Gallery item 1 out of 2
DARE 2B Unisex Adult Ambling Walking Socks (Lichen Green)
2 colors
Sold and shipped by Pertemba GB
£6.99
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black w/Blue)
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black w/Pink)
Gallery item 1 out of 2
AZENGEAR Calf Support Compression Socks for Men & Women (20-30 mmHg)(Black w/Blue)
2 colors
Sold and shipped by aZengear
£12.95£14.95
DARE 2B Unisex Adult Festivity Fair Isle Fluffy Christmas Socks (Beetroot/Powder Pink)
DARE 2B Unisex Adult Festivity Fair Isle Fluffy Christmas Socks (Moonlight Denim/Navy)
Gallery item 1 out of 2
DARE 2B Unisex Adult Festivity Fair Isle Fluffy Christmas Socks (Beetroot/Powder Pink)
2 colors
Sold and shipped by Pertemba GB
£5.49
REGATTA Mens Samaris Trail Ankle Socks (Pack of 2) (Black/Dark Steel)
REGATTA Mens Samaris Trail Ankle Socks (Pack of 2) (Navy/Dark Red)
Gallery item 1 out of 2
REGATTA Mens Samaris Trail Ankle Socks (Pack of 2) (Black/Dark Steel)
2 colors
Sold and shipped by Pertemba GB
£13.99
UMBRO Mens Classico Socks (Royal Blue)
UMBRO Mens Classico Socks (Sky Blue)
UMBRO Mens Classico Socks (Purple Cactus/White)
UMBRO Mens Classico Socks (Shocking Orange)
UMBRO Mens Classico Socks (Black)
UMBRO Mens Classico Socks (Carbon/White)
UMBRO Mens Classico Socks (Yellow)
UMBRO Mens Classico Socks (Navy/White)
UMBRO Mens Classico Socks (Emerald)
UMBRO Mens Classico Socks (Green Gecko)
UMBRO Mens Classico Socks (Safety Yellow/Carbon)
UMBRO Mens Classico Socks (White)
UMBRO Mens Classico Socks (Blazing Yellow/Carbon)
UMBRO Mens Classico Socks (Vermillion)
UMBRO Mens Classico Socks (Beetroot Purple/Black)
Gallery item 1 out of 15
UMBRO Mens Classico Socks (Royal Blue)
15 colors
Sold and shipped by Pertemba GB
£10.49
CRAGHOPPERS Men's Glencoe Walking Sock
CRAGHOPPERS Glencoe Walking Socks
CRAGHOPPERS Men's Glencoe Walking Sock
Gallery item 1 out of 3
CRAGHOPPERS Men's Glencoe Walking Sock
3 colors
Sold and shipped by Official Craghoppers UK Ltd.
£11.95£18.00
UMBRO Mens Leg Sleeves (Green Gecko)
UMBRO Mens Leg Sleeves (Sky Blue)
UMBRO Mens Leg Sleeves (Purple Cactus/White)
UMBRO Mens Leg Sleeves (New Claret)
UMBRO Mens Leg Sleeves (Black)
UMBRO Mens Leg Sleeves (Vermillion)
UMBRO Mens Leg Sleeves (Yellow)
UMBRO Mens Leg Sleeves (Emerald)
UMBRO Mens Leg Sleeves (Navy/White)
UMBRO Mens Leg Sleeves (White)
UMBRO Mens Leg Sleeves (Royal Blue)
UMBRO Mens Leg Sleeves (Safety Yellow/Carbon)
UMBRO Mens Leg Sleeves (Carbon/White)
Gallery item 1 out of 13
UMBRO Mens Leg Sleeves (Green Gecko)
13 colors
Sold and shipped by Pertemba GB
£9.49
DARE 2B Unisex Adult Essentials Sports Ankle Socks (Pack of 3) (Black)
DARE 2B Unisex Adult Essentials Sports Ankle Socks (Pack of 3) (White)
Gallery item 1 out of 2
DARE 2B Unisex Adult Essentials Sports Ankle Socks (Pack of 3) (Black)
2 colors
Sold and shipped by Pertemba GB
£11.49
RHINO Mens Sports Base Layer Shorts (White)
RHINO Mens Sports Base Layer Shorts (Red)
RHINO Mens Sports Base Layer Shorts (Navy)
RHINO Mens Sports Base Layer Shorts (Light Blue)
RHINO Mens Sports Base Layer Shorts (Heather Grey)
RHINO Mens Sports Base Layer Shorts (Black)
RHINO Mens Sports Base Layer Shorts (Bottle Green)
RHINO Mens Sports Base Layer Shorts (Royal)
Gallery item 1 out of 8
RHINO Mens Sports Base Layer Shorts (White)
8 colors
Sold and shipped by Pertemba GB
£18.99
1000 MILE Mens Fusion Ankle Socks (Black/Orange)
1000 MILE Mens Fusion Ankle Socks (Black/Green)
1000 MILE Mens Fusion Ankle Socks (White/Grey)
Gallery item 1 out of 3
1000 MILE Mens Fusion Ankle Socks (Black/Orange)
3 colors
Sold and shipped by Pertemba GB
£15.49
CRAGHOPPERS Men's Wool Hiker Sock
CRAGHOPPERS Men's Wool Hiker Sock
Sold and shipped by Official Craghoppers UK Ltd.
£11.95£18.00
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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.