Sign up or log in
Sports
Sports
Popular
Cycling
Cycling
Hiking
Hiking
Running
Running
Fitness & Gym
Fitness & Gym
Camping
Camping
Football
Football
Swimming
Swimming
Kayaking
Kayaking
More sports
Country Sports
Country Sports
Fishing
Fishing
Golf
Golf
Horse Riding
Horse Riding
Mountain Biking
Mountain Biking
Road Cycling
Road Cycling
Roller Skating
Roller Skating
Stand Up Paddle
Stand Up Paddle
Tennis
Tennis
Trekking
Trekking
Yoga
Yoga
Basketball
Basketball
Rugby
Rugby
Scootering
Scootering
Climbing
Climbing
Trail Running
Trail Running
Snowboarding
Snowboarding
Mountaineering
Mountaineering
Slacklines
Via Ferrata, Canyoning and Caving
Via Ferrata, Canyoning and Caving
Winter Sports
Aqua Fitness
Water Polo
Water Polo
Surf
Surf
Sailing
Sailing
Snorkelling
Snorkelling
Scuba Diving
Scuba Diving
Spearfishing
Spearfishing
Water Skiing and Wakeboarding
Kitesurfing and Windsurfing
Kitesurfing and Windsurfing
Wing Foil
Wing Foil
Kiting
Kiting
Frisbee and Boomerangs
Skiing
Skiing
Cross-Training
HIIT Training
Bodybuilding
Boxing
Boxing
Pilates
Pilates
Gymnastics
Gymnastics
Martial Arts
Martial Arts
Kids PE & Gym
Kids PE & Gym
Dance
Dance
Gym Gear for Babies
Gym Gear for Babies
Athletics
Athletics
Triathlon
Triathlon
Orienteering
Nordic Walking
Nordic Walking
Power Walking
Power Walking
Cricket
Cricket
Handball
Handball
Field Hockey
Field Hockey
American Football
Baseball
Baseball
Roller Hockey
Roller Hockey
Netball
Volleyball and Beach Volleyball
Volleyball and Beach Volleyball
Badminton
Badminton
Table Tennis
Table Tennis
Squash
Squash
Padel
Padel
Frontenis
Beach Tennis
Basque Pelota
Ice Hockey
Ice Hockey
Ice & Figure Skating
Ice & Figure Skating
Skateboarding and Longboarding
Skateboarding and Longboarding
Archery
Archery
Darts
Darts
Snooker and Pool
Snooker and Pool
Boules and Petanque
Boules and Petanque
Skittles and Palet
Wallball
Carp Fishing
Carp Fishing
Predator fishing
Predator fishing
Coarse & Match Fishing
Coarse & Match Fishing
Sea fishing
Sea fishing
Teqball
Racketball
Race Walking
Floorball
Floorball
Table Football
Bushcraft - Bivouac
Bushcraft - Bivouac
See all sports
Women
Women
Shop all Women
Clothing
Clothing
Shoes
Shoes
Activewear
Activewear
Swimwear
Swimwear
Loungewear
Bikes
Bikes
Athleisure
Plus Size Clothing
Plus Size Clothing
Bags and Accessories
Bags and Accessories
Sales
Sales
Men
Men
Shop all Men
Clothing
Clothing
Shoes
Shoes
Bikes
Bikes
Activewear
Activewear
Swimwear
Swimwear
Bags and Accessories
Bags and Accessories
Loungewear
Athleisure
Plus Size Clothing
Sales
Cold Weather Collection
Base Layers
Kids
Kids
Shop all Kids
Clothing
Clothing
Shoes
Shoes
Outdoor Activities
Outdoor Activities
Bags and Accessories
Bags and Accessories
Baby and Toddlers
Baby and Toddlers
Swimwear and Beachwear
Swimwear and Beachwear
Back To School
Sales
Kids Cycling
Accessories
Accessories
Shop all Accessories
Sports Electronics
Sports Electronics
Bags
Bags
Footwear Accessories
Footwear Accessories
Water Bottles, flasks and protein shakers
Water Bottles, flasks and protein shakers
Sunglasses
Face Masks
Umbrellas
Navigational Equipment
Navigational Equipment
Hats, Headwear and Gloves
Hats, Headwear and Gloves
Rain Poncho and Capes
Towel and Towel Ponchos
Activity Trackers
Nutrition and Body Care
Nutrition and Body Care
Shop all Nutrition and Body Care
Protein
Protein
Food and Snacks
Food and Snacks
Vitamins & Supplements
Vitamins & Supplements
Hydration
Hydration
Energy Supplements
Energy Supplements
Pre, Intra and Post-Workout
Pre, Intra and Post-Workout
Protein Shakers & Water Bottles
Protein Shakers & Water Bottles
Recovery and Injury
Recovery and Injury
Skin and Body Care
Skin and Body Care
Pre, Intra and Post-Workout
Workshop Services and Spare Parts
Workshop Services and Spare Parts
Shop all Workshop Services and Spare Parts
Repair Your Product Yourself
Repair Your Product Yourself
Repair Your Product With Us
Repair Your Product With Us
Second Life Products
Deals
Deals
Shop all Deals
Mens Sale
Womens Sale
Kids Sale
Running Sale
Ski Sale
Fitness Sale
Cycling Sale
Hiking Sale
Swimming Sale
Camping Sale
Football Sale
Sailing Sale
Golf Sale
Water Sports Sale
Gym & Dance Sale
Horse Riding Sale
Fishing Sale
Snowboard Sale
Up to 50% off
Brands
Brands
Designed by Decathlon
QUECHUA
Mountain sports
ROCKRIDER
Outdoor cycling
DOMYOS
Fitness & gym
KIPSTA
Team sports
ARTENGO
Racket sports
TRIBORD
Water sports
Brands we love
ADIDAS
SALOMON
THULE
QUIKSILVER
GARMIN
PUMA
ASICS
CANTERBURY
CONTINENTAL
FORCLAZ
ITIWIT
KALENJI
NABAIJI
OLAIAN
REEBOK
ROXY
SIMOND
TAYLORMADE
TRIBAN
TARMAK
UMBRO
VAN RYSEL
WEDZE
WILSON
YONEX
See all brands
Help & support
Find a store
Sports
Sports
Women
Women
Men
Men
Kids
Kids
Accessories
Accessories
Nutrition and Body Care
Nutrition and Body Care
Workshop Services and Spare Parts
Workshop Services and Spare Parts
Deals
Deals
Brands
Brands
Men
Clothing
Underwear
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.
Thermal Underwear
Socks
Briefs
See more
Filters
947 items
Most relevant
product nature
socks
676
briefs
65
long-sleeved base layer
50
base layer
44
baselayer bottom
43
boxer shorts
18
compression socks
15
undershorts
13
short-sleeved base layer
12
base layer shirt
5
See all
colors
black
499
blue
302
white
301
grey
294
green
141
red
89
orange
53
pink
53
yellow
52
multi-colour
47
See all
brands
BRIDGEDALE
62
1000 MILE
60
ADIDAS
55
REEBOK
43
PUMA
37
AKRON
34
HEAT HOLDERS
32
WEDZE
32
KIPRUN
27
QUECHUA
27
See all
price
Minimum
Maximum
Sellers
Decathlon
233
Sock Snob UK
173
Pertemba GB
104
Bowls4u T/A 4U Trading Group
92
ProSwimwear LTD
55
SOCKSHOP
51
adidas (UK) Limited (ADIDAS UK)
35
Gamola Golf
24
Craft
22
Regatta Ltd UK
22
See all
Gallery item 1 out of 2
WEDZE Men's ski base layer top - BL 100 - Black
4.6
9466
Rate: 4.6 stars, 9466 votes
2 colors
£5.99
£7.99
KIPRUN PACK OF 2 PAIRS OF RUN500 FINE CREW RUNNING SOCKS
4.8
48
Rate: 4.8 stars, 48 votes
£5.99
Gallery item 1 out of 6
KALENJI Men's breathable microfibre boxers - Black
4.5
24595
Rate: 4.5 stars, 24595 votes
6 colors
£5.99
QUECHUA Sock Hike 50 High - Pack of 2 pairs - Grey
4.5
1586
Rate: 4.5 stars, 1586 votes
£5.99
WEDZE M Ski Thermal Base Layer Bottoms - BL 100 - Black
4.6
4492
Rate: 4.6 stars, 4492 votes
£5.99
£7.99
DECATHLON Men's Breathable Microfibre Boxers Tri-Pack - Dark Blue/Blue/Khaki
£14.99
Was £17.99
Gallery item 1 out of 2
KIPSTA Adult Long-Sleeved Thermal Football Base Layer Top Keepcomfort 100 - Black
4.6
989
Rate: 4.6 stars, 989 votes
2 colors
£9.99
Gallery item 1 out of 2
KIPRUN PACK OF 2 PAIRS OF RUN 500 THICK MID RUNNING SOCKS
2 colors
£5.99
Gallery item 1 out of 2
KIPSTA Adult Football Undershorts Keepcomfort - Black
4.6
353
Rate: 4.6 stars, 353 votes
2 colors
£7.99
Was £9.99
Gallery item 1 out of 4
QUECHUA Hiking Socks Hike 500 Mid x2 Pairs - Grey and Red
4.6
2725
Rate: 4.6 stars, 2725 votes
4 colors
£12.99
WEDZE ADULT SKI AND SNOWBOARD SOCKS - 50 - BLACK
4.5
2130
Rate: 4.5 stars, 2130 votes
£3.99
£4.99
Gallery item 1 out of 17
ARTENGO Low Sports Socks RS 160 Tri-Pack - Orange/Beige/White
4.6
20138
Rate: 4.6 stars, 20138 votes
17 colors
£4.99
£5.99
KIPRUN PACK OF 2 PAIRS OF RUN500 THICK MID-CALF RUNNING SOCKS
£6.99
Gallery item 1 out of 6
VAN RYSEL Summer Road Cycling Socks 900 - Yellow
4.7
763
Rate: 4.7 stars, 763 votes
6 colors
£8.99
Was £9.99
Gallery item 1 out of 6
QUECHUA Hike 100 High Socks - Trendy stripes and blue - Pack of 2 pairs
4.5
2677
Rate: 4.5 stars, 2677 votes
6 colors
£8.99
Gallery item 1 out of 6
VAN RYSEL Cycling Socks 500
4.6
4364
Rate: 4.6 stars, 4364 votes
6 colors
£4.99
Was £5.49
Gallery item 1 out of 3
QUECHUA Socks Hike 100 Mid 2-Pack - black
4.6
1448
Rate: 4.6 stars, 1448 votes
3 colors
£6.99
KALENJI Men's breathable briefs - Dark blue
4.3
572
Rate: 4.3 stars, 572 votes
£5.99
Gallery item 1 out of 3
QUECHUA Hiking socks - Hike 900 High Blue - Pack of 2 pairs
4.5
2189
Rate: 4.5 stars, 2189 votes
3 colors
£24.99
Gallery item 1 out of 2
VAN RYSEL Cycling Summer Training Base Layer - White/Blue
4.6
2702
Rate: 4.6 stars, 2702 votes
2 colors
£13.99
Gallery item 1 out of 5
ARTENGO Mid Tennis Socks RS 500 Tri-Pack - Glossy White
4.5
11808
Rate: 4.5 stars, 11808 votes
5 colors
£7.99
Gallery item 1 out of 4
KIPRUN RUN900 MID-CALF FINE RUNNING SOCKS - BLUE
4.5
676
Rate: 4.5 stars, 676 votes
4 colors
£6.99
£9.99
Gallery item 1 out of 3
WEDZE MEN’S THERMAL SKI BASE LAYER TOP - BL 500 - WHITE
4.7
1387
Rate: 4.7 stars, 1387 votes
3 colors
£14.99
Gallery item 1 out of 4
ARTENGO Low Tennis Socks RS 500 Tri-Pack - White/Green
4.6
9386
Rate: 4.6 stars, 9386 votes
4 colors
£7.99
Gallery item 1 out of 5
KIPRUN RUNNING MID THICK SOCKS RUN 900 WHITE
4.6
3406
Rate: 4.6 stars, 3406 votes
5 colors
£7.99
Gallery item 1 out of 3
KIPRUN RUN900 MID FINE RUNNING SOCKS
4.6
3164
Rate: 4.6 stars, 3164 votes
3 colors
£7.99
Gallery item 1 out of 3
WEDZE SKI SOCKS 100 - BLUE
4.6
719
Rate: 4.6 stars, 719 votes
3 colors
£5.99
£8.99
Gallery item 1 out of 9
ARTENGO High Tennis Socks RS 500 Tri-Pack - Shiny White
4.5
29187
Rate: 4.5 stars, 29187 votes
9 colors
£7.99
WEDZE Men’s Ski Base Layer Bottoms - BL 500 - Black
4.7
542
Rate: 4.7 stars, 542 votes
£14.99
Gallery item 1 out of 2
KIPRUN RUN900 THIN INVISIBLE RUNNING SOCKS
4.5
1423
Rate: 4.5 stars, 1423 votes
2 colors
£6.99
Gallery item 1 out of 2
QUECHUA Hiking socks - Hike 520 Double High Navy x 2 pairs
4.3
2235
Rate: 4.3 stars, 2235 votes
2 colors
£17.99
Gallery item 1 out of 3
ARTENGO Low Tennis Socks RS 100 Tri-Pack - Black
4.6
5844
Rate: 4.6 stars, 5844 votes
3 colors
£4.49
Gallery item 1 out of 2
DOMYOS Women's Non-Slip Fitness Socks 500 - Black
4.5
2108
Rate: 4.5 stars, 2108 votes
2 colors
£5.99
Was £6.99
VAN RYSEL Road Cycling Socks 900 Aero
4.5
83
Rate: 4.5 stars, 83 votes
£19.99
Gallery item 1 out of 2
QUECHUA Warm Hiking Socks - SH100 MID - 2 Pairs
4.6
2744
Rate: 4.6 stars, 2744 votes
2 colors
£8.99
Gallery item 1 out of 5
KIPSTA Adult Short-Sleeved Thermal Base Layer Top Keepdry 500 - White
4.7
794
Rate: 4.7 stars, 794 votes
5 colors
£14.99
Gallery item 1 out of 9
QUECHUA Hiking socks - Hike 500 High Trendy Kamo x2 pairs
4.5
2962
Rate: 4.5 stars, 2962 votes
9 colors
£14.99
VAN RYSEL Race Short-Sleeved Cycling Base Layer
4.6
321
Rate: 4.6 stars, 321 votes
£24.99
Gallery item 1 out of 10
KIPSTA Football Socks Viralto Solo - Pink/Red Stripes
4.5
3697
Rate: 4.5 stars, 3697 votes
10 colors
£5.99
Gallery item 1 out of 2
ARTENGO High Sports Socks RS 900 Tri-Pack - Black/Grey
4.5
3534
Rate: 4.5 stars, 3534 votes
2 colors
£11.99
1 of 24