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.
897 items
KIPRUN RUN900 THIN INVISIBLE RUNNING SOCKS
KIPRUN RUN900 THIN INVISIBLE RUNNING SOCKS
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KIPRUN RUN900 THIN INVISIBLE RUNNING SOCKS
Rate: 4.5 stars, 1426 votes
2 colors
£6.99
SEALSKINZ Sealskinz Waterproof Cold Weather Mid-Length Socks
SEALSKINZ Sealskinz Waterproof Cold Weather Mid-Length Socks
£39.99
KIPRUN Run 900 Thin Mid-Calf Running Socks - Coral
KIPRUN RUN900 MID FINE RUNNING SOCKS
KIPRUN ECO-DESIGN RUN900 MID FINE RUNNING SOCKS - WHITE
KIPRUN RUN900 MID FINE RUNNING SOCKS - YELLOW
Gallery item 1 out of 4
KIPRUN Run 900 Thin Mid-Calf Running Socks - Coral
Rate: 4.6 stars, 3181 votes
4 colors
£5.99£7.99
DOMYOS Women's Non-Slip Fitness Socks 500 - Black
DOMYOS Women's Non-Slip Fitness Socks 500 - Grey
Gallery item 1 out of 2
DOMYOS Women's Non-Slip Fitness Socks 500 - Black
Rate: 4.5 stars, 2122 votes
2 colors
£5.99
Was £6.99
ARTENGO High Sports Socks RS 100 Tri-Pack - Black
ARTENGO High Sports Socks RS 100 Tri-Pack - White
ARTENGO High Sports Socks RS 100 Tri-Pack - Black
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ARTENGO High Sports Socks RS 100 Tri-Pack - Black
Rate: 4.5 stars, 5240 votes
3 colors
£4.49
VAN RYSEL Road Cycling Replica Socks Decathlon–AG2R La Mondiale Team
VAN RYSEL Road Cycling Replica Socks Decathlon–AG2R La Mondiale Team
£9.99
KIPRUN RUN900 5-TOE RUNNING SOCKS
KIPRUN RUN900 5-TOE RUNNING SOCKS
£9.99
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, 3424 votes
5 colors
£7.99
KIPRUN PACK OF 2 PAIRS OF RUN 500 THIN INVISIBLE RUNNING SOCKS
KIPRUN PACK OF 2 PAIRS OF RUN 500 THIN INVISIBLE RUNNING SOCKS
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KIPRUN PACK OF 2 PAIRS OF RUN 500 THIN INVISIBLE RUNNING SOCKS
Rate: 4.5 stars, 52 votes
2 colors
£4.99
QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
QUECHUA Warm Hiking Socks - SH500 ULTRA-WARM MID - 2 Pairs
QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
QUECHUA Warm Hiking Socks - SH500 ULTRA-WARM MID - 2 Pairs
QUECHUA Warm Hiking Socks - SH500 ULTRA-WARM MID - 2 Pairs
Gallery item 1 out of 8
QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
Rate: 4.6 stars, 4149 votes
8 colors
£9.99£12.99
ARTENGO High Sports Socks RS 160 Tri-Pack - White
ARTENGO High Sports Socks RS 160 Tri-Pack - Navy
ARTENGO High Sports Socks RS 160 Tri-Pack - Grey
ARTENGO High Sports Socks RS 160 Tri-Pack - Black
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ARTENGO High Sports Socks RS 160 Tri-Pack - White
Rate: 4.5 stars, 14604 votes
4 colors
£5.99
ARTENGO Mid Sports Socks Tri-Pack RS 560 - Black/Grey
ARTENGO RS 560 Mid Sport Socks Tri-Pack - White/Grey
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ARTENGO Mid Sports Socks Tri-Pack RS 560 - Black/Grey
Rate: 4.6 stars, 2236 votes
2 colors
£9.99
NEWFEEL Fitness/Nordic Walking Socks WS 100 Invisible 3-Pack - white
NEWFEEL Fitness/Nordic Walking Socks WS 100 Invisible 3-Pack - white
Rate: 4.2 stars, 832 votes
£6.49
ARTENGO Low Tennis Socks RS 500 Tri-Pack - White/Green
ARTENGO Low Sports Socks RS 500 Tri-Pack - White
ARTENGO RS 500 Low Sports Socks Tri-Pack - Black
ARTENGO Low Sports Socks RS 500 Tri-Pack - Blue/White/Pink
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ARTENGO Low Tennis Socks RS 500 Tri-Pack - White/Green
Rate: 4.6 stars, 9417 votes
4 colors
£7.99
ARTENGO Low Tennis Socks RS 100 Tri-Pack - Black
ARTENGO Low Tennis Socks RS 100 Tri-Pack - White
ARTENGO Low Tennis Socks RS 100 Tri-Pack - White
Gallery item 1 out of 3
ARTENGO Low Tennis Socks RS 100 Tri-Pack - Black
Rate: 4.6 stars, 5877 votes
3 colors
£4.49
VAN RYSEL Cycling Socks 900
VAN RYSEL Cycling Socks 900
VAN RYSEL Cycling Socks 900 Ltd Edition
VAN RYSEL Cycling Socks 900 "No Mud Enough"
Gallery item 1 out of 4
VAN RYSEL Cycling Socks 900
4 colors
£8.49
WEDZE ADULT SKI SOCKS - 500 - NAVY BLUE RED
WEDZE ADULT SKI SOCKS - 500 - NAVY BLUE RED
Rate: 4.5 stars, 1656 votes
£5.99£12.99
OFFLOAD Men's Long-Sleeved Rugby Base Layer Top R500 - Black
OFFLOAD Men's Long-Sleeved Rugby Base Layer Top R500 - Black
Rate: 4.9 stars, 26 votes
£14.99
WEDZE Ski Socks 100 JQT 23 - Navy
WEDZE Ski Socks 100 JQT 23 - Navy
Rate: 4.7 stars, 480 votes
£5.99£8.99
KALENJI Men's long seamless boxer - Dark blue
KALENJI Men's long seamless boxer - Dark blue
Rate: 5.0 stars, 2 votes
£15.99
VAN RYSEL Long-Sleeved Cycling Base Layer Racer - Carbon Grey
VAN RYSEL Long-Sleeved Cycling Base Layer Racer - Cosmos Blue
Gallery item 1 out of 2
VAN RYSEL Long-Sleeved Cycling Base Layer Racer - Carbon Grey
Rate: 4.6 stars, 383 votes
2 colors
£29.99
KIPSTA Adult Short-Sleeved Football Base Layer Keepdry - Navy Blue
KIPSTA Short-Sleeved Keepdry - Mottled Grey
KIPSTA Adult Short-Sleeved Thermal Base Layer Top Keepdry 500 - White
KIPSTA Adult Short-Sleeved Football Base Layer Keepdry - Red
KIPSTA Adult Short-Sleeved Thermal Base Layer Top Keepdry 500 - Black
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KIPSTA Adult Short-Sleeved Football Base Layer Keepdry - Navy Blue
Rate: 4.7 stars, 814 votes
5 colors
£14.99
ARTENGO RS 160 Mid Sport Socks Tri-Pack - Dark Grey
ARTENGO Mid Sports Socks Tri-Pack RS 160 - Black
ARTENGO Mid Sports Socks Tri-Pack RS 160 - Khaki/Khaki/Black
ARTENGO RS 160 Adult Mid-High Sports Socks Tri-Pack - White
ARTENGO Mid Sports Socks RS 160 Tri-Pack - Purple and White Patterns
Gallery item 1 out of 5
ARTENGO RS 160 Mid Sport Socks Tri-Pack - Dark Grey
Rate: 4.6 stars, 10784 votes
5 colors
£5.99
QUECHUA Hike 100 High Socks - Beige Burgundy-Lyocell& Linen-Pack of 2 pairs
QUECHUA Hike 100 High Socks - Beige Burgundy-Lyocell& Linen-Pack of 2 pairs
£8.99
FORCLAZ Men's MT500 mountain trekking Merino wool boxer shorts
FORCLAZ Men's MT500 mountain trekking Merino wool boxer shorts
Rate: 4.8 stars, 11 votes
£17.99
SOLOGNAC Hunting Socks Pack ACT 100 x2 pairs
SOLOGNAC Hunting Socks Pack ACT 100 x2 pairs
Rate: 4.7 stars, 1057 votes
£5.49
DOMYOS Men's Cotton Boxers Tri-Pack - Black/Grey/Blue
DOMYOS Men's Cotton Boxers Tri-Pack - Black/Grey/Blue
£14.99
Was £19.99
KIPRUN 900 COMPRESSION RUNNING SOCKS
KIPRUN 900 COMPRESSION RUNNING SOCKS
Rate: 4.4 stars, 131 votes
£24.99
KIPRUN Running Socks Run 100 3-Pack - black
KIPRUN Running Socks Run 100 3-Pack - white
Gallery item 1 out of 2
KIPRUN Running Socks Run 100 3-Pack - black
Rate: 4.5 stars, 29618 votes
2 colors
£3.99£4.49
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 - Red
KIPSTA Short Grippy Football Socks Viralto MiD - White
KIPSTA Short Grippy Football Socks Viralto MiD - Black
Gallery item 1 out of 5
KIPSTA Mid-Rise Grippy Football Socks Viralto MiD II - Blue
Rate: 4.5 stars, 459 votes
5 colors
£7.99
Was £8.49
QUECHUA Trek Altitude Socks - Lilac (1 pair)
QUECHUA Trek Altitude Socks (pack of 1 pair) - Black
Gallery item 1 out of 2
QUECHUA Trek Altitude Socks - Lilac (1 pair)
Rate: 4.4 stars, 55 votes
2 colors
£19.99
ADIDAS High Sports Socks Tri-Pack - Black
ADIDAS High Sports Socks Tri-Pack - Black
Rate: 4.6 stars, 328 votes
£9.99
FOUGANZA Adult Horse Riding Socks 500 Twin-Pack - Lavender Purple/Navy Graphic Designs
FOUGANZA Adult Horse Riding Socks 500 - Blue/Black/Green GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Blue/Black/Brown GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Burgundy/Black GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Blue/Black/Larch Green GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Grey/Black GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Black/Grey/Pink PatternsPack of 2
Gallery item 1 out of 7
FOUGANZA Adult Horse Riding Socks 500 Twin-Pack - Lavender Purple/Navy Graphic Designs
Rate: 4.6 stars, 477 votes
7 colors
£8.49
QUECHUA Warm Hiking Socks - SH500 MOUNTAIN MID - 2 Pairs
QUECHUA Warm Hiking Socks - SH500 MOUNTAIN MID - 2 Pairs
Gallery item 1 out of 2
QUECHUA Warm Hiking Socks - SH500 MOUNTAIN MID - 2 Pairs
Rate: 4.4 stars, 2637 votes
2 colors
£14.99
VAN RYSEL 900 Winter Cycling Socks
VAN RYSEL 900 Winter Cycling Socks
Gallery item 1 out of 2
VAN RYSEL 900 Winter Cycling Socks
Rate: 4.4 stars, 469 votes
2 colors
£12.99
SIMOND Mountaineering Socks - Alpinism Black
SIMOND Mountaineering Socks - Alpinism Black
Rate: 4.5 stars, 290 votes
£14.99
ARTENGO Low Tennis Socks RS 560 Tri-Pack - White/Black
ARTENGO Low Sports Socks RS 560 Tri-Pack - Navy/White
ARTENGO Low Sports Socks RS 560 3-Pack - Black/Grey
Gallery item 1 out of 3
ARTENGO Low Tennis Socks RS 560 Tri-Pack - White/Black
Rate: 4.7 stars, 782 votes
3 colors
£9.99
KIPRUN RUN900 THICK STRAP RUNNING SOCKS - BLACK
KIPRUN RUNNING THICK STRAP SOCKS - BLACK
KIPRUN Running Thick Socks Run 900 Strap - blue
Gallery item 1 out of 3
KIPRUN RUN900 THICK STRAP RUNNING SOCKS - BLACK
Rate: 4.4 stars, 5144 votes
3 colors
£9.99
FOUGANZA 700 Adult Horse Riding Socks - Black
FOUGANZA 700 Adult Horse Riding Socks - Navy
Gallery item 1 out of 2
FOUGANZA 700 Adult Horse Riding Socks - Black
Rate: 4.6 stars, 700 votes
2 colors
£8.99
KIPSTA Adult Football Socks Essential - Blue
KIPSTA Adult Football Socks Essential - White
KIPSTA Adult Football Socks Essential Club - Red
KIPSTA Adult Football Socks Essential Club - Black
Gallery item 1 out of 4
KIPSTA Adult Football Socks Essential - Blue
Rate: 4.3 stars, 2559 votes
4 colors
£2.99
Was £3.99
4.5/5 based on 443499 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.