Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S

Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S

XXL3XL.
£39.99 GBP
£39.99 GBP
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Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S
  • Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S
  • Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S
  • Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S
  • Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S
  • Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S
Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S

Men's Seamless Thermal Underwear Bottoms 4F 4FWAW25USEAM234-30S

£39.99 GBP
£39.99 GBP

Dispatched within 3-5 days

Size Guide

Footwear

Nike

Men’s Nike

EURO 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 47.5 48 48.5 49 49.5 50
CM 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 31.5 32.0 32.5 33.0 33.5
UK 5.5 6.0 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5
USA 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5

Women’s Nike

EURO 34.5 35 35.5 36 36.5 37.5 38 38.5 39 40 40.5 41 42
CM 21.0 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0
UK 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5
USA 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0

Children’s Nike

EURO 25.5 26 26.5 27 27.5 28 28.5 29.5 30 31 31.5 32 33 33.5 34 35 35.5 36 36.5 37.5 38 38.5 39 40
CM 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21 21.5 22 22.5 23 23.5 23.5 24 24 24.5 25
UK 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
USA 8.5C 9C 9.5C 10C 10.5C 11C 11.5C 12C 12.5C 13C 13.5C 1Y 1.5Y 2Y 2.5Y 3Y 3.5Y 4Y 4.5Y 5Y 5.5Y 6Y 6.5Y 7Y

Infant’s Nike

EURO 16 16.5 17 18 18.5 19 19.5 20 21 21.5 22 22.5 23.5 24.0 25
CM 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0
UK 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5
USA 1.0C 1.5C 2.0C 2.5C 3.0C 3.5C 4.0C 4.5C 5.0C 5.5C 6.0C 6.5C 7.0C 7.5C 8.0C

Adidas

Men’s Adidas

EURO 39⅓ 40 40⅔ 41⅓ 42 42⅔ 43⅓ 44 44⅔ 45⅓ 46 46⅔ 47⅓ 48 48⅔ 49⅓
CM 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 31.5 32.0
UK 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5
USA 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0

Women’s Adidas

EURO 36⅔ 37⅓ 38.0 38⅔ 39⅓ 40 40⅔ 41⅓ 42 42⅔
CM 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0
UK 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5
USA 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0

Children’s Adidas

EURO 30 31 32 33 34 35 36 36⅔ 37⅓ 38 38⅔ 39⅓ 40
CM 18.0 19.0 20.5 21.0 22.0 – – 23.0 23.5 24.0 24.5 25.0 25.5
UK 11.5 12.5 13.5 1.0 2.0 2.5 3.5 4.0 4.5 5.0 5.5 6.0 6.5
USA 12.0 13.0 1.0 1.5 2.5 3.0 4.0 4.5 5.0 5.5 6.0 6.5 7.5

Infant’s Adidas

EURO 21 22 23 24 25 26 27 28
CM 13.0 13.5 14.0 14.5 15.0 15.5 16.0 17.0
UK 5K 5.5K 6.0K 7.0K 7.5K 8.5K 9.0K 10K
USA 5.5 6.0 6.5 7.5 8.0 9.0 10.0 10.5

Puma

Men’s Puma

EURO 40.5 41 42 42.5 43 44 44.5 45 46 46.5 47 48
CM 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 32.0
UK 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0
USA 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0

Women’s Puma

EURO 37 37.5 38.0 38.5 39.0 40.0 40.5 41
CM 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5
UK 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5
USA 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0

Children’s Puma

EURO 23 24 25 26 27 28 29 30 31 32 32.5 33 34 34,5 35 35,5 36 37 37,5 38 38,5 39
CM 14.5 15.0 15.5 16.0 16.5 17 17.5 18 18.5 19 19.5 20 20,5 21 21.5 22.0 22.5 23.0 23.5 24.0 24,5 25
UK 6.0 7.0 8.0 8.5 9.0 1.5 2 2.5 3 3.5 4 1 1,5 2 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
USA 7.0 8.0 9.0 9.5 10.0 11 12 12.5 13 1 1.5 2 2,5 3 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0

Asics

Men’s Asics

EURO 36 37 37,5 38 39 39,5 40 40,5 41,5 42 42,5 43,5 44 44,5 45 46 46.5 47 48 48,5 49 49,5 50,5 51 51,5
CM 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.3 28.5 29.0 29.5 30.0 30.5 30,8 31 31,5 32.0 32.5 33
UK . . . . . . 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13 . . . . .
USA 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0

Women’s Asics

EURO 35.5 36 37.0 37.5 38 39.0 39.5 40.0 40.5 41.5 42.0 42.5 43.5 44 44.5
CM 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5   26.0 26.5 27.0 27.5 28.0 28.5
UK 3 3.5 4.0 4.5 5-5.5 6.0 6.5 6.5-7.0 7.0 7.5 7.5 8.0 8.5 . .
USA 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0

Children’s Asics

EURO 27 28 28.5 29.5 30.0 30.5 31.5 32.0 32.5 33 33.5 34.5 35 35.5 36.0 37 37.5 38 39.0 39.5 40.0
CM 17.0   17.5 18 18.5 19 19.5   20.0 20.5 21.0 21.5 22.0   22.5 23 23.5 24 24.5 25.0  
USA K10 K10H K11 K11H K12 K12H K13 K13H 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7
UK K9 K9H K10 K10H K11 K11H K12 K12H K13 K13H 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6

Reebok

Men’s Reebok

EURO 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 48 48.5 50
Cm 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 31.5 32.0 33.0
UK 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0
USA 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 15.0

Women’s Reebok

Euro 36 37 37.5 38 38.5 39 40 40.5 41
Cm 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0
UK 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5
USA 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0

Kids’s Reebok

EURO 27 27.5 28 29 30 30.5 31 32 32.5 33 34 35 36 36.5 37 38 39
Cm 16.5 17.0 17.5 18.0 18.5 19.0 19.5 20.5 21.0 21.5 22.0 23.0 23.5 23.5 24.0 24.5 25.0
UK 10.0 10.5 11.0 11.5 12.0 12.5 13.0 1.0 1.5 2.0 2.5 3.5 4.0 4.5 5.0 5.5 6.5
USA 10.5 11.0 11.5 12.0 12.5 13.0 13.5 1.5 2.0 2.5 3.0 4.0 4.5 5.0 5.5 6.0 7.0

Ecco

Men’s Ecco

EURO 41 42 43 44 45 46 47 48 49 50
Cm 27/27.5 27.5/28 28/28.5 28.5/29 29/29.5 30.5 31.5 32 32.5 33/33.5
USA 7/7.5 8/8.5 9/9.5 10/10.5 11/11.5 12/12.5 13/13.5 14/14.5 15/15.5 16/16.5

Women’s Ecco

EURO 35 36 37 38 39 40 41 42 43
Cm 21/21.5 22/22.5 23/23.5 24/24.5 25/25.5 26/26.5 27/27.5 28/28.5 29/29.5
USA 4/4.5 5/5.5 6/6.5 7/7.5 8/8.5 9/9.5 10/10.5 11/11.5 12/12.5

Kid’s Ecco

EURO 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
Cm 9 10 10.5 11 12 12.5 13 14 14.5 15 16 16.5 17 18 18.5 19 20 20.5 21 22 22.5 23.5
USA – – 1 2 2.5 3 4 5 6 6.5 7 8 8.5 9 10 11 11.5 12.5 13.5 14 14.5 15

Timberland

Men’s Timberland

EURO 40 41 41.5 42 43 43.5 44 44.5 45 45.5 46 47 47.5 48
Cm 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 31.5
USA 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5

Women’s Timberland

EURO 34.5 35 35.5 36 37 37.5 38 38.5 39 39.5 40 41 41.5 42
Cm 21.0 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5
USA 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5

Kid’s Timberland

EURO 30 31 31.5 32 33 33.5 34 35
Cm 18.5 19 19.5 20 20.5 20.5 21 21.5
USA 12.5 13 13.5 1 1.5 2 2.5 3

Lacoste

Men’s Lacoste

EURO 39.5 40 40.5 41 42 42.5 43 44 44.5 45 46 46.5 47
Cm 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0
UK 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12

Women’s Lacoste

EURO 35.5 36 37 37.5 38 39 39.5 40 40.5 41 42
Cm 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8

New Balance

Men’s New Balance

EURO 36 37 37.5 38 38.5 39.5 40 40.5 41.5 42 42.5 43 44 44.5 45 45.5 46.5 47 47.5 49 50 51 52 53 54 55
CM 22.0 22.5 23 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 32.0 33.0 34.0 35 36 37 38
UK 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5
USA 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0

Women’s New Balance

EURO 33 33.5 34 34.5 35 36 36.5 37 37.5 38 39 40 40.5 41 41.5 42.5 43 43.5 44 45 45.5 46 46.5 48
Cm 20.0 20.5 21.0 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 30.5 31.0 32.0
UK 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 13
US 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 15

Junior’s New Balance

EURO 28 28.5 29 30 30.5 31 32 32.5 33 33.5 34.5 35 35.5 36 37 37.5 38 38.5 39 40
Cm 16.5 17.0 17.5 18.0 18.5 19.0 19.3 19.8 20 20.5 21.0 21.2 21.5 22.0 22.5 23.0 23.5 24 24.5 25.0
US 10.5 11 11.5 12 12.5 13 13.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7
UK 10 10.5 11 11.5 12 12.5 13 13.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5

Kappa

Mens&Womens Kappa

EURO 36 37 38 39 40 41 42 43 44 45 46
CM 22.5 23.8 24.4 25 26 27 27.5 28.2 29 29.5 30

Kid’s Kappa

EURO 30 31 32 33 34 35 36 37 38 39
CM 18 18.5 19 19.5 20.6 21 21.5 22.5 23 24

McArthur

Men’s & women’s shoes – McArthur

EURO 36 37 38 39 40 41 42 43 44 45 46
CM 23.5 24.5 25 25.5 26 26.5 27.5 28.5 29.0 29.5 30.0
UK 4 5 5.5 6.5 7 7.5 8.5 9.5 10.5 11 11.5
US 5 6 6.5 7.5 8 8.5 9.5 11 11.5 12 12.5

Rider

Men’s&Women’s Rider

EURO 35/36 37 38 39 39/40 40/41 41 41/42 42 43 43/44 44 45/46 47
CM 22.5 23 23.5 24.5 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29

Junior’s Rider

EURO 21 22/23 24 25/26 27/28 28/29 29/30 30 31 31/32 32 33/34 34/35 36
CM 13 13.5 14.5 15.5 16 17 18.5 19 19.5 20 20.5 21 21.5 22

Salomon

Men’s&Women’s Salomon

EURO 36 36⅔ 37⅓ 38.0 38⅔ 39⅓ 40 40⅔ 41⅓ 42 42⅔ 43⅓ 44 44⅔ 45⅓ 46 46⅔ 47⅓ 48 48⅔ 49⅓
CM 22.8 23.2 23.6 24 24.5 24.9 25.3 25.8 26.2 26.6 27 27.5 27.9 28.3 28.7 29.2 29.6 30 30.4 30.8 31.3

VANS

Women’s VANS

EURO 34.5 35.0 36.0 36.5 37.0 38.0 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0
CM 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5
UK 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
USA 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 NA NA

Men’s VANS

EURO 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 46 47 48 49 50
CM 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 31.0 32.0 33.0 34
UK 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 12.0 13.0 14.0 15.0
USA 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0 14.0 15.0 15.6

Vans – Junior

EURO 27 27.5 28.0 29.0 30.0 30.5 31.0 31.5 32.0 32.5 33.0 34.0 34.5 35.0 36.0 36.5 37.0 38.0 38.5 39
CM 15.5 16.0 16.5 17.0 17.5 18.0 18.5 19.0 19.5 20.0 20.5 21.0 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0
UK 10 10.5 11.0 11.5 12.0 12.5 13.0 13.5 1.0 1.5 2.0 2.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
USA 10.5 11.0 11.5 12.0 12.5 13.0 13.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0

VANS Unisex

EURO 34.5 35.0 36.0 36.5 37.0 38.0 38.5 39.0 40.0 40.5 41.0 42.0 42.5 43.0 44.0 44.5 45.0 46.0 47.0 48.0 49.0 50.0
CM 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 28.0 28.5 29.0 29.5 30.0 31.0 32.0 33.0 34
UK 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 12.0 13.0 14.0 15.0
USA 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 13.0 14.0 15.0 16.0
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Men's 4fskin thermal underwear – the first layer like a second skin

Men's 4f thermal leggings are a reliable base for layered outfits, providing warmth, freedom of movement and comfort during winter activities. Thanks to 4fskin technology, they fit the body like a second skin, ensuring comfort even during intense exercise.

The seamless construction minimises the risk of chafing and irritation, while the quick-drying finish helps maintain a dry feeling for longer. Ventilation zones support air circulation, improving thermal comfort during training or outdoor activities. The high-rise waist and full-length legs provide protection from the cold in key areas.

The fitted slim fit follows the shape of the body without restricting movement. The leggings are perfect under a ski jacket or outdoor clothing.

Men's seamless thermal leggings by 4f – features:

  • 4fskin technology – fits the body like a second skin
  • Quick-drying finish – supports moisture wicking
  • Seamless construction – minimises the risk of chafing
  • Ventilation zones – enhance thermal comfort
  • First layer – ideal under ski and outdoor clothing
  • Slim fit – follows the shape of the body and does not restrict movement
  • High-rise waist – improved fit and waist protection
  • Full-length legs – additional thermal insulation
  • Composition: 58% polyamide, 37% polyester, 5% elastane

Combine with other products

Make the most of the set by choosing products from the categories men's sweatshirts, men's trousers and men's jackets and gilets. Also explore other products featuring 4fskin technology.

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