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.
50 items
VAN RYSEL Summer Road Cycling Socks 900 - Yellow
VAN RYSEL Summer Road Cycling Socks 900 - Black
VAN RYSEL 900 Summer Road Cycling Socks - Black
VAN RYSEL Cycling Socks 900
VAN RYSEL Cycling Socks 900
VAN RYSEL Summer Road Cycling Socks 900 - Blue
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VAN RYSEL Summer Road Cycling Socks 900 - Yellow
6 colors
£8.99
Was £9.99
VAN RYSEL Cycling Socks 500
VAN RYSEL Cycling Socks 500
VAN RYSEL Cycling Socks 500
VAN RYSEL 500 Cycling Socks - Dark Blue
VAN RYSEL RoadR 500 Cycling Socks - Navy
VAN RYSEL RoadR 500 Cycling Socks - Black
VAN RYSEL Cycling Socks 500
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VAN RYSEL Cycling Socks 500
Rate: 4.6 stars, 4372 votes
7 colors
£4.99
Was £5.49
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Yellow
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Green
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Khaki
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - White
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Mottled Grey
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Red
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Black
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Navy Blue
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Indigo Blue
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Orange
KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Purple
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KIPSTA Adult Long-Sleeved Thermal Base Layer Top Keepdry 500 - Yellow
Rate: 4.7 stars, 4409 votes
11 colors
£9.99£17.99
KIPSTA Football Socks Viralto Solo - Pink/Red Stripes
KIPSTA Football Socks Viralto Club - Orange
KIPSTA Football Socks Viralto Club - White
KIPSTA Football Socks Viralto Club - Yellow
KIPSTA Football Socks Viralto Club - Blue
KIPSTA Football Socks Viralto Club - Black
KIPSTA Football Socks Viralto Club - Navy Blue
KIPSTA Football Socks Viralto Club - Red
KIPSTA Football Socks Viralto Club - Green
KIPSTA Football Socks Viralto Club - Purple
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KIPSTA Football Socks Viralto Solo - Pink/Red Stripes
Rate: 4.5 stars, 3713 votes
10 colors
£5.99
KIPRUN RUN900 MID FINE RUNNING SOCKS
KIPRUN ECO-DESIGN RUN900 MID FINE RUNNING SOCKS - WHITE
KIPRUN RUN900 MID FINE RUNNING SOCKS - YELLOW
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KIPRUN RUN900 MID FINE RUNNING SOCKS
Rate: 4.6 stars, 3176 votes
3 colors
£7.99
KIPRUN RUNNING MID THICK SOCKS RUN 900 WHITE
KIPRUN RUN900 MID THICK RUNNING SOCKS
KIPRUN RUNNING MID THICK SOCKS - RUN 900 BLACK
KIPRUN RUN900 MID THICK RUNNING SOCKS - YELLOW
KIPRUN RUN900 MID THICK RUNNING SOCKS - BLUE
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KIPRUN RUNNING MID THICK SOCKS RUN 900 WHITE
Rate: 4.6 stars, 3421 votes
5 colors
£7.99
KIPSTA Short Grippy Football Socks Viralto MiD - Red
KIPSTA Mid-Rise Grippy Football Socks Viralto MiD II - Blue
KIPSTA Mid-Rise Grippy Football Socks Viralto MiD II - Yellow
KIPSTA Short Grippy Football Socks Viralto MiD - White
KIPSTA Short Grippy Football Socks Viralto MiD - Black
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KIPSTA Short Grippy Football Socks Viralto MiD - Red
Rate: 4.5 stars, 458 votes
5 colors
£7.99
Was £8.49
KIPRUN RUN900 MID-CALF FINE RUNNING SOCKS - BLUE
KIPRUN RUN900 MID-CALF THIN RUNNING SOCKS
KIPRUN RUNNING MID-CALF FINE SOCKS - RUN 900 BLACK
KIPRUN Run900 Mid-Calf Fine Running Socks - Fluo Yellow
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KIPRUN RUN900 MID-CALF FINE RUNNING SOCKS - BLUE
Rate: 4.5 stars, 684 votes
4 colors
£6.99£9.99
KIPRUN RUN900 THICK STRAP RUNNING SOCKS - BLACK
KIPRUN RUNNING THICK STRAP SOCKS - BLACK
KIPRUN Running Thick Socks Run 900 Strap - blue
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KIPRUN RUN900 THICK STRAP RUNNING SOCKS - BLACK
Rate: 4.4 stars, 5141 votes
3 colors
£9.99
VAN RYSEL 900 Winter Cycling Socks
VAN RYSEL 900 Winter Cycling Socks
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VAN RYSEL 900 Winter Cycling Socks
Rate: 4.4 stars, 468 votes
2 colors
£12.99
VAN RYSEL Summer Road Cycling Socks 500 - Yellow/Lime
VAN RYSEL Summer Road Cycling Socks 500 - Purple/Magenta
VAN RYSEL Summer Road Cycling Socks 500 - Dark Olive
VAN RYSEL Cycling Socks RoadR 500 - White and Lavender
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VAN RYSEL Summer Road Cycling Socks 500 - Yellow/Lime
Rate: 4.4 stars, 298 votes
4 colors
£9.99
KOROK Adult Field Hockey Socks FH500 - White
KOROK Adult Field Hockey Socks FH500 - Blue
KOROK Adult Field Hockey Socks FH500 - Black
KOROK Adult Field Hockey Socks FH500 - Neon Yellow
KOROK Adult Field Hockey Socks FH500 - Neon Pink
KOROK Adult Field Hockey Socks FH500 - Red
KOROK Adult Field Hockey Socks FH500 - Green
KOROK Adult Field Hockey Socks FH500 - Neon Orange
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KOROK Adult Field Hockey Socks FH500 - White
8 colors
£9.99
KIPSTA Adult Football Undershorts Keepdry 500 - White
KIPSTA Adult Football Undershorts Keepdry 500 - Orange
KIPSTA Adult Football Undershorts Keepdry 500 - Red
KIPSTA Adult Football Undershorts Keepdry 500 - Yellow
KIPSTA Adult Football Undershorts Keepdry 500 - Indigo Blue
KIPSTA Adult Football Undershorts Keepdry 500 - Green
KIPSTA Adult Football Undershorts Keepdry 500 - Purple
KIPSTA Adult Football Undershorts Keepdry 500 - Black
KIPSTA Adult Football Undershorts Keepdry 500 - Navy Blue
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KIPSTA Adult Football Undershorts Keepdry 500 - White
Rate: 4.5 stars, 188 votes
9 colors
£14.99
Was £19.99
TCA Men's Power Base Layer Compression Long Sleeve Top - Army
TCA Men's Power Base Layer Compression Long Sleeve Top - Navy Eclipse
TCA Men's Power Base Layer Compression Long Sleeve Top - High Risk Red
TCA Men's Power Base Layer Compression Long Sleeve Top - Black
TCA Men's Power Base Layer Compression Long Sleeve Top - Pro White
TCA Men's Power Base Layer Compression Long Sleeve Top - Black Stealth
TCA Men's Power Base Layer Compression Long Sleeve Top - Darkest Spruce
TCA Men's Power Base Layer Compression Long Sleeve Top - Cabernet
TCA Men's Power Base Layer Compression Long Sleeve Top - Graphite
TCA Men's Power Base Layer Compression Long Sleeve Top - Blueprint
TCA Men's Power Base Layer Compression Long Sleeve Top - Sonic Yellow
TCA Men's Power Base Layer Compression Long Sleeve Top - Lime Punch
TCA Men's Power Base Layer Compression Long Sleeve Top - Dazzling Blue
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TCA Men's Power Base Layer Compression Long Sleeve Top - Army
Rate: 5.0 stars, 2 votes
13 colors
Sold and shipped by Thorogood Sports Ltd
£18.99
TCA Men's Pro Performance Baselayer Long Sleeve Mock Neck Top
TCA Men's Pro Performance Baselayer Long Sleeve Mock Neck Top
TCA Men's Pro Performance Baselayer Long Sleeve Mock Neck Top
TCA Men's Pro Performance Baselayer Long Sleeve Mock Neck Top
TCA Men's Pro Performance Baselayer Long Sleeve Mock Neck Top
TCA Men's Performance Base Layer Compression Top - Mock - Dazzling Blue
TCA Men's Performance Base Layer Compression Top - Mock - High Risk Red
TCA Men's Performance Base Layer Compression Top - Mock - Graphite
TCA Men's Performance Base Layer Compression Top - Mock - Darkest Spruce
TCA Men's Performance Base Layer Compression Top - Mock - Black
Gallery item 1 out of 10
TCA Men's Pro Performance Baselayer Long Sleeve Mock Neck Top
Rate: 5.0 stars, 1 votes
10 colors
Sold and shipped by Thorogood Sports Ltd
£18.99
KOROK Adult Socks FH500 - Ixelles Green
KOROK Adult Field Hockey Socks FH500 - Red
KOROK Adult Field Hockey Socks FH500 - Green
KOROK Adult Field Hockey Socks FH500 - Navy
KOROK Adult Field Hockey Socks FH500 - Neon Green
KOROK Kids'/Adult Field Hockey Socks FH500 - Neon Pink
KOROK Kids'/Adult Field Hockey Socks FH500 - Neon Orange
KOROK Adult Field Hockey Socks FH500 - Black
KOROK Adult Field Hockey Socks FH500 - White
KOROK Adult Field Hockey Socks FH500 - Navy Blue
KOROK Kids'/Adult Field Hockey Socks FHSO500 Lynx Away
KOROK Kids'/Adult Field Hockey Socks FHSO500 Lynx Home
KOROK Kids'/Adult Field Hockey Socks FH500 - Old Club Blue
KOROK Kids'/Adult Field Hockey Socks FHSO500 Oldclub Home
KOROK Kids'/Adult Field Hockey Socks FHSO500 Oldclub Away
KOROK Kids'/Adult Field Hockey Socks FH500 - Tervuren Home
KOROK Kids'/Adult Field Hockey Socks FH500 - Lynx Orange
KOROK Kids'/Adult Field Hockey Socks FH500 - La Louvière Blue
KOROK Kids'/Adult Field Hockey Socks FH500 - La Louvière White
KOROK Kids'/Adult Field Hockey Socks FH500 - Lynx Black
KOROK Kids'/Adult Field Hockey Socks FH500 - Tervuren Away
Gallery item 1 out of 21
KOROK Adult Socks FH500 - Ixelles Green
Rate: 4.2 stars, 76 votes
21 colors
£9.99
Out of stock
TCA Men's Performance Base Layer Compression T-shirt - Dazzling Blue
TCA Men's Pro Performance Baselayer Short Sleeve Top
TCA Men's Performance Base Layer Compression T-shirt - Darkest Spruce
TCA Men's Performance Base Layer Compression T-shirt - Team Red
TCA Men's Performance Base Layer Compression T-shirt - Sonic Yellow
Gallery item 1 out of 5
TCA Men's Performance Base Layer Compression T-shirt - Dazzling Blue
Rate: 4.7 stars, 3 votes
5 colors
Sold and shipped by Thorogood Sports Ltd
£14.99
ALLSIX Volleyball High Socks VSK500 - Blue
ALLSIX High Volleyball Socks VSK500 - Yellow
ALLSIX High Volleyball Socks VSK500 - Navy
ALLSIX Volleyball High Socks VSK500 - White
ALLSIX Volleyball High Socks VSK500 - Pink
ALLSIX Volleyball High Socks VSK500 - Green
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ALLSIX Volleyball High Socks VSK500 - Blue
Rate: 4.6 stars, 211 votes
6 colors
£3.99£4.99
AKRON Akron Men's Roman Brief - Yellow
AKRON Akron Men's Roman Brief - Yellow
Sold and shipped by ProSwimwear LTD
£17.99
ADIDAS Spain 24 Away Socks
ADIDAS Spain 24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
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
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 Juventus 23/24 Home Socks
ADIDAS Juventus 23/24 Home Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
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COMODO High Vis Neon Low Cut Summer Cycling Socks for Biking | Mens & Womens
7 colors
Sold and shipped by Sock Snob UK
£10.55£10.99
SPEEDO Mens 5cm Escape Brief
SPEEDO Mens 5cm Escape Brief
Sold and shipped by SPEEDO INTERNATIONAL LIMITED
£29.99£32.00
KIPRUN Running Socks Run 900 X - White / Orange
KIPRUN RUNNING RUN900 X SOCKS
Gallery item 1 out of 2
KIPRUN Running Socks Run 900 X - White / Orange
Rate: 4.6 stars, 99 votes
2 colors
£17.99
TCA Men's Super Thermal Compression Shorts - Graphite
TCA Men's Super Thermal Compression Shorts - Sonic Yellow
TCA Men's SuperThermal Compression Baselayer Short
TCA Men's SuperThermal Compression Baselayer Short
Gallery item 1 out of 4
TCA Men's Super Thermal Compression Shorts - Graphite
Rate: 4.0 stars, 1 votes
4 colors
Sold and shipped by Thorogood Sports Ltd
£18.99
UMBRO Mens Primo Football Socks (Yellow/Black)
UMBRO Mens Primo Football Socks (Emerald/White)
UMBRO Mens Primo Football Socks (Royal Blue/White)
UMBRO Mens Primo Football Socks (Vermillion/White)
UMBRO Mens Primo Football Socks (Black/White)
UMBRO Mens Primo Football Socks (Dark Navy/White)
UMBRO Mens Primo Football Socks (White/Black)
Gallery item 1 out of 7
UMBRO Mens Primo Football Socks (Yellow/Black)
7 colors
Sold and shipped by Pertemba GB
£6.99
UMBRO Diamond Football Socks (Green Gecko/Black)
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 (Yellow/Black)
UMBRO Diamond Football Socks (Beetroot Purple/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)
Gallery item 1 out of 13
UMBRO Diamond Football Socks (Green Gecko/Black)
13 colors
Sold and shipped by Pertemba GB
£11.49
MURPHYS Unisex Adult Pro Mid GAA Socks (Green/Gold)
MURPHYS Unisex Adult Pro Mid GAA Socks (Green/White)
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 (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
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
UMBRO Mens Classico Socks (Royal Blue)
UMBRO Mens Classico Socks (Sky Blue)
UMBRO Mens Classico Socks (Purple Cactus/White)
UMBRO Mens Classico Socks (Beetroot Purple/Black)
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)
Gallery item 1 out of 15
UMBRO Mens Classico Socks (Royal Blue)
15 colors
Sold and shipped by Pertemba GB
£10.49
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
ADIDAS Arsenal 23/24 Away Socks
ADIDAS Arsenal 23/24 Away Socks
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£20.00
SPEEDO Speedo Digi Interference 17cm Brief - Yellow/ Red/ Magenta/ Adriatic/ Flame
SPEEDO Speedo Digi Interference 17cm Brief - Yellow/ Red/ Magenta/ Adriatic/ Flame
Sold and shipped by ProSwimwear LTD
£23.99
PRINGLE OF SCOTLAND Mens Bamboo Rib Knit Leisure Socks
PRINGLE OF SCOTLAND Mens Bamboo Rib Knit Leisure Socks
Sold and shipped by SOCKSHOP
£9.99
PROVIZ Proviz Classic Airfoot Reflective Running Socks - Mid Length
PROVIZ Proviz Classic Airfoot Reflective Running Socks - Mid Length
Gallery item 1 out of 2
PROVIZ Proviz Classic Airfoot Reflective Running Socks - Mid Length
2 colors
Sold and shipped by Proviz Sports
£15.94
TCA Men's Super Thermal Compression Top - Mock - Cadmium Green
TCA Men's Super Thermal Compression Top - Mock - Graphite
TCA Men's SuperThermal Baselayer Long Sleeve Crew Neck Top
TCA Men's SuperThermal Baselayer Long Sleeve Crew Neck Top
TCA Men's SuperThermal Baselayer Long Sleeve Crew Neck Top
TCA Men's SuperThermal Baselayer Long Sleeve Crew Neck Top
Gallery item 1 out of 6
TCA Men's Super Thermal Compression Top - Mock - Cadmium Green
Rate: 2.5 stars, 4 votes
6 colors
Sold and shipped by Thorogood Sports Ltd
£20.99
BRIDGEDALE TRAIL RUN Ultralight T2 Coolmax Sport 3/4 Crew Men's - Yellow
BRIDGEDALE TRAIL RUN Ultralight T2 Coolmax Sport 3/4 Crew Men's - Yellow
Sold and shipped by Bowls4u T/A 4U Trading Group
From £17.75
BRIDGEDALE TRAIL RUN Ultralight T2 Coolmax Sport Low Men's - Yellow
BRIDGEDALE TRAIL RUN Ultralight T2 Coolmax Sport Low Men's - Yellow
Sold and shipped by Bowls4u T/A 4U Trading Group
£16.48
4.3/5 based on 31225 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.