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.
893 items
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, 56 votes
2 colors
£4.99
ARTENGO Low Sports Socks Tri-Pack RS 160 - White/Navy
ARTENGO RS 160 Low Sports Socks 3-Pack - Black/Grey
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ARTENGO Low Sports Socks Tri-Pack RS 160 - White/Navy
Rate: 4.6 stars, 1116 votes
2 colors
£5.99
SEALSKINZ Sealskinz Waterproof Cold Weather Mid-Length Socks
SEALSKINZ Sealskinz Waterproof Cold Weather Mid-Length Socks
£39.99
KIPRUN RUN900 MID THICK RUNNING SOCKS
KIPRUN RUNNING MID THICK SOCKS RUN 900 WHITE
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 RUN900 MID THICK RUNNING SOCKS
Rate: 4.6 stars, 3427 votes
5 colors
£7.99
DOMYOS Women's Non-Slip Fitness Socks 500 - Black
DOMYOS Women's Non-Slip Fitness Socks 500 - Grey
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DOMYOS Women's Non-Slip Fitness Socks 500 - Black
Rate: 4.5 stars, 2123 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, 5241 votes
3 colors
£4.49
ARTENGO High Sports Socks RS 160 Tri-Pack - Black
ARTENGO High Sports Socks RS 160 Tri-Pack - Grey
ARTENGO High Sports Socks RS 160 Tri-Pack - Navy
ARTENGO High Sports Socks RS 160 Tri-Pack - White
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ARTENGO High Sports Socks RS 160 Tri-Pack - Black
Rate: 4.5 stars, 14618 votes
4 colors
£5.99
ARTENGO RS 560 Mid Sport Socks Tri-Pack - White/Grey
ARTENGO Mid Sports Socks Tri-Pack RS 560 - Black/Grey
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ARTENGO RS 560 Mid Sport Socks Tri-Pack - White/Grey
Rate: 4.6 stars, 2238 votes
2 colors
£9.99
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, 690 votes
4 colors
£6.99£9.99
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
QUECHUA Sock Hike 100 Low 2-Pack - grey
QUECHUA Socks Hike 100 Low 2-Pack - black
QUECHUA Hike 100 Low Socks - Light Blue- Pack of 2 pairs
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QUECHUA Sock Hike 100 Low 2-Pack - grey
Rate: 4.6 stars, 1303 votes
3 colors
£5.99
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
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 ULTRA-WARM MID - 2 Pairs
QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
QUECHUA Warm Hiking Socks - SH500 ULTRA-WARM MID - 2 Pairs
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QUECHUA Warm Hiking Socks SH500 Mid 2 Pairs
Rate: 4.6 stars, 4152 votes
8 colors
£9.99£12.99
SOLOGNAC Hunting Socks Pack ACT 100 x2 pairs
SOLOGNAC Hunting Socks Pack ACT 100 x2 pairs
Rate: 4.7 stars, 1057 votes
£5.49
ARTENGO RS 160 Adult Mid-High Sports Socks Tri-Pack - White
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 Mid Sports Socks RS 160 Tri-Pack - Purple and White Patterns
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ARTENGO RS 160 Adult Mid-High Sports Socks Tri-Pack - White
Rate: 4.6 stars, 10796 votes
5 colors
£5.99
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
KIPRUN Running Socks Run 100 3-Pack - black
KIPRUN Running Socks Run 100 3-Pack - white
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KIPRUN Running Socks Run 100 3-Pack - black
Rate: 4.5 stars, 29635 votes
2 colors
£3.99£4.49
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
ARTENGO Low Tennis Socks RS 100 Tri-Pack - White
ARTENGO Low Tennis Socks RS 100 Tri-Pack - White
ARTENGO Low Tennis Socks RS 100 Tri-Pack - Black
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ARTENGO Low Tennis Socks RS 100 Tri-Pack - White
Rate: 4.6 stars, 5877 votes
3 colors
£4.49
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
WEDZE Ski Socks 100 JQT 23 - Navy
WEDZE Ski Socks 100 JQT 23 - Navy
Rate: 4.7 stars, 480 votes
£5.99£8.99
KIPSTA Adult Short-Sleeved Football Base Layer Keepdry - Red
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 Thermal Base Layer Top Keepdry 500 - Black
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KIPSTA Adult Short-Sleeved Football Base Layer Keepdry - Red
Rate: 4.7 stars, 819 votes
5 colors
£14.99
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"
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VAN RYSEL Cycling Socks 900
4 colors
£8.49
QUECHUA Warm Hiking Socks - SH500 MOUNTAIN MID - 2 Pairs
QUECHUA Warm Hiking Socks - SH500 MOUNTAIN MID - 2 Pairs
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QUECHUA Warm Hiking Socks - SH500 MOUNTAIN MID - 2 Pairs
Rate: 4.4 stars, 2638 votes
2 colors
£14.99
KIPRUN 900 COMPRESSION RUNNING SOCKS
KIPRUN 900 COMPRESSION RUNNING SOCKS
Rate: 4.4 stars, 131 votes
£24.99
QUECHUA Trek Altitude Socks - Lilac (1 pair)
QUECHUA Trek Altitude Socks (pack of 1 pair) - Black
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QUECHUA Trek Altitude Socks - Lilac (1 pair)
Rate: 4.4 stars, 55 votes
2 colors
£19.99
KIPSTA Short Grippy Football Socks Viralto MiD - White
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 - Black
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KIPSTA Short Grippy Football Socks Viralto MiD - White
Rate: 4.5 stars, 460 votes
5 colors
£7.99
Was £8.49
ADIDAS High Sports Socks Tri-Pack - Black
ADIDAS High Sports Socks Tri-Pack - Black
Rate: 4.6 stars, 329 votes
£9.99
FOUGANZA Adult Horse Riding Socks 500 Twin-Pack - Lavender Purple/Navy Graphic Designs
FOUGANZA Adult Horse Riding Socks 500 - Blue/Black/Larch Green GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Blue/Black/Brown GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Blue/Black/Green GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Grey/Black GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Burgundy/Black GraphPack of 2
FOUGANZA Adult Horse Riding Socks 500 - Black/Grey/Pink PatternsPack of 2
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FOUGANZA Adult Horse Riding Socks 500 Twin-Pack - Lavender Purple/Navy Graphic Designs
Rate: 4.6 stars, 478 votes
7 colors
£8.49
ADIDAS High Sports Socks Tri-Pack - White
ADIDAS High Sports Socks Tri-Pack - White
Rate: 4.6 stars, 459 votes
£9.99
VAN RYSEL Long-Sleeved Cycling Base Layer Racer - Carbon Grey
VAN RYSEL Long-Sleeved Cycling Base Layer Racer - Cosmos Blue
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VAN RYSEL Long-Sleeved Cycling Base Layer Racer - Carbon Grey
Rate: 4.6 stars, 383 votes
2 colors
£29.99
ARTENGO RS 500 Mid Sports Socks Tri-Pack - White
ARTENGO RS 500 Mid Sports Socks Tri-Pack - Grey
ARTENGO RS 500 Mid Sports Socks Tri-Pack - Black
ARTENGO Mid-High Tennis Socks RS 500 Tri-Pack - Navy
ARTENGO Mid Tennis Socks RS 500 Tri-Pack - Glossy White
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ARTENGO RS 500 Mid Sports Socks Tri-Pack - White
Rate: 4.5 stars, 11876 votes
5 colors
£7.99
SIMOND Mountaineering Socks - Alpinism Black
SIMOND Mountaineering Socks - Alpinism Black
Rate: 4.5 stars, 290 votes
£14.99
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, 470 votes
2 colors
£12.99
DEXSHELL Waterproof Winter Cycling Socks DS683
DEXSHELL Waterproof Winter Cycling Socks DS683
Rate: 4.5 stars, 49 votes
£24.99
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, 5146 votes
3 colors
£9.99
ARTENGO RS 900 Mid Sports Socks Tri-Pack - Black/White
ARTENGO RS 900 Mid Sports Socks Tri-Pack - Black/White
Rate: 4.5 stars, 853 votes
£11.99
SOLOGNAC BASE LAYER FLEECE JACKET 500 BROWN
SOLOGNAC BASE LAYER FLEECE JACKET 500 BROWN
Rate: 4.6 stars, 13 votes
£24.99
DOMYOS Women's Non-Slip Cotton Ballet Fitness Socks 500 - Black
DOMYOS Women's Non-Slip Cotton Ballet Fitness Socks 500 - Black
Rate: 4.5 stars, 3295 votes
£4.99
WEDZE SKI SOCKS 100 - BLUE
WEDZE SKI SOCKS - 100 - BLACK
WEDZE SKI SOCKS - 100 - NEON PINK
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WEDZE SKI SOCKS 100 - BLUE
Rate: 4.6 stars, 738 votes
3 colors
£5.99£8.99
4.5/5 based on 445196 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.