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Base Layers

Discover the insulating warmth and moisture-wicking comfort of our thermal base layer collection. Best worn to trap heat and regulate body temperature, our light, technical, and breathable base layers can be worn for any outdoor activity. So, if you need a versatile and lightweight way of staying warm when it’s cold, or dry and cool when it’s hot – look no further than a base layer for maximum warmth and breathability.

Shop Women's Base Layers | Shop Men's Base Layers

1 - 48 of 63 items

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  1. Trespass Mens Base Layer Bottoms Quick Dry 3/4 Length Diego Dark Grey Trespass Mens Base Layer Bottoms Quick Dry 3/4 Length Diego Dark Grey
    Trespass Mens Base Layer Bottoms Quick Dry 3/4 Length Diego Dark Grey
    £12.99 Was £25.99
  2. Trespass Mens Base Layer Top Long Sleeve Quick Dry Rennie Dark Grey
    Trespass Mens Base Layer Top Long Sleeve Quick Dry Rennie Dark Grey
    £13.99 Was £27.99
  3. Friga Women's Base Layer Trousers in Blue Friga Women's Base Layer Trousers in Blue
    Friga Women's Base Layer Trousers in Blue
    £53.99  
  4. Trespass Womens Base Layer Top with Long Sleeves Racquel Fig
    Trespass Womens Base Layer Top with Long Sleeves Racquel Fig
    £13.99 Was £27.99
  5. Dainton Women's Base Layer Pants - FIG
    Dainton Women's Base Layer Pants - FIG
    £12.99 Was £25.99
  6. Bubbles Kids' Thermals in Pink Bubbles Kids' Thermals in Pink
    Bubbles Kids' Thermals in Pink
    £14.99 Was £29.99
    3 colours
  7. Bubbles Kids' Thermals in Blue Bubbles Kids' Thermals in Blue
    Bubbles Kids' Thermals in Blue
    £14.99 Was £29.99
    3 colours
  8. Bubbles Kids' Thermals in Black Bubbles Kids' Thermals in Black
    Bubbles Kids' Thermals in Black
    £14.99 Was £29.99
    3 colours
  9. CALUM Boys Blue Base Layer set in Blue
    CALUM Boys Blue Base Layer set in Blue
    £19.99 Special Price
  10. Unite360 Kids' Thermals in Black
    Unite360 Kids' Thermals in Black
    £13.99 Was £27.99
  11. Unite360 Adults' Thermal Set in Black
    Unite360 Adults' Thermal Set in Black
    £19.99 Was £37.99
  12. Sashay Women's Sleevless Thermal Set in Pink
    Sashay Women's Sleevless Thermal Set in Pink
    £36.99 Special Clearance Price
    2 colours
  13. Sashay Women's Sleevless Thermal Set in Yellow
    Sashay Women's Sleevless Thermal Set in Yellow
    £14.99 Special Clearance Price
    2 colours
  14. Thriller Adults' Thermal Set in Black
    Thriller Adults' Thermal Set in Black
    £24.99 Was £49.99
    2 colours
  15. Thriller Adults' Thermal Set in Black Thriller Adults' Thermal Set in Black
    Thriller Adults' Thermal Set in Black
    £24.99 Was £49.99
    2 colours
  16. Bamba Kids' Thermals in Grey
    Bamba Kids' Thermals in Grey
    £32.99 Was £65.99
    2 colours
  17. Bamba Kids' Thermals in Grey
    Bamba Kids' Thermals in Grey
    £32.99 Was £65.99
    2 colours
  18. Bubbles B - Kids Fleece Base Layers in Pink Bubbles B - Kids Fleece Base Layers in Pink
    Bubbles B - Kids Fleece Base Layers in Pink
    £14.99 Was £29.99
    3 colours
  19. Bubbles B - Kids Fleece Base Layers in Black
    Bubbles B - Kids Fleece Base Layers in Black
    £14.99 Was £29.99
    3 colours
  20. Bubbles B - Kids Fleece Base Layers in Blue
    Bubbles B - Kids Fleece Base Layers in Blue
    £14.99 Was £29.99
    3 colours
  21. Mariella Women's DLX Sleeveless T-shirt in Black Mariella Women's DLX Sleeveless T-shirt in Black
    Mariella Women's DLX Sleeveless T-shirt in Black
    £24.99 Special Clearance Price
  22. Chara Women's DLX Thermal Trousers in Grey Chara Women's DLX Thermal Trousers in Grey
    Chara Women's DLX Thermal Trousers in Grey
    £87.99  
  23. Libra Women's DLX Long Sleeve Thermal T-Shirt in Grey Libra Women's DLX Long Sleeve Thermal T-Shirt in Grey
    Libra Women's DLX Long Sleeve Thermal T-Shirt in Grey
    £89.99  
  24. Fitchner Men's DLX Merino Wool Thermal Trousers in Grey Fitchner Men's DLX Merino Wool Thermal Trousers in Grey
    Fitchner Men's DLX Merino Wool Thermal Trousers in Grey
    £44.99 Was £93.99
  25. Keenan II Men's Quick Dry Active Top in Black
    Keenan II Men's Quick Dry Active Top in Black
    £9.99 Special Clearance Price
  26. Wexler Men's DLX Merino Wool Thermal Top in Grey Wexler Men's DLX Merino Wool Thermal Top in Grey
    Wexler Men's DLX Merino Wool Thermal Top in Grey
    £44.99 Was £95.99
  27. Mystery Adults' Super Soft Thermal Set in Navy Mystery Adults' Super Soft Thermal Set in Navy
    Mystery Adults' Super Soft Thermal Set in Navy
    £19.99 Was £37.99
  28. Enigma Adults' Super Soft Thermal Trousers in Navy Enigma Adults' Super Soft Thermal Trousers in Navy
    Enigma Adults' Super Soft Thermal Trousers in Navy
    £11.99 Was £19.99
  29. Unify Adults' Super Soft Long Sleeve Thermal Top in Navy Unify Adults' Super Soft Long Sleeve Thermal Top in Navy
    Unify Adults' Super Soft Long Sleeve Thermal Top in Navy
    £11.99 Was £21.99
  30. Wise360 Kids' Half Zip Thermal Top in Black
    Wise360 Kids' Half Zip Thermal Top in Black
    £10.99 Was £15.99
  31. Wise360 Adults' Quick Dry Long Sleeve Thermal Top in Black
    Wise360 Adults' Quick Dry Long Sleeve Thermal Top in Black
    £12.99 Was £21.99
  32. Oaf Kids Base Layer Top in Green
    Oaf Kids Base Layer Top in Green
    £8.99 Special Price
    3 colours
  33. Oaf Kids Base Layer Top in Purple
    Oaf Kids Base Layer Top in Purple
    £8.99 Special Price
    3 colours
  34. Oaf Kids Base Layer Top in Pink
    Oaf Kids Base Layer Top in Pink
    £8.99 Special Price
    3 colours
  35. Draper Men's DLX Merino Wool Long Sleeve T-shirt in Grey
    Draper Men's DLX Merino Wool Long Sleeve T-shirt in Grey
  36. Zeller Men's Base Layer Top in Navy
    Zeller Men's Base Layer Top in Navy
    £12.99 Special Price
  37. Roar Kids Base Layer Top in Purple
    Roar Kids Base Layer Top in Purple
    £8.99 Special Price
  38. Roar Kids Base Layer Top in Blue
    Roar Kids Base Layer Top in Blue
    £8.99 Special Price
  39. Pax Kids Base Layer Pants in Blue
    Pax Kids Base Layer Pants in Blue
    £8.99 Special Price
  40. Pax Kids Base Layer Pants in Purple
    Pax Kids Base Layer Pants in Purple
    £8.99 Special Price
  41. Dasha Women's DLX Long Sleeve Thermal T-shirt in Black Dasha Women's DLX Long Sleeve Thermal T-shirt in Black
    Dasha Women's DLX Long Sleeve Thermal T-shirt in Black
    £22.99 Was £45.99
  42. Brute Men's DLX Active Leggings in Black Brute Men's DLX Active Leggings in Black
    Brute Men's DLX Active Leggings in Black
    £22.99 Was £41.99
  43. Brawn Men's DLX Quick Dry Long Sleeve Active T-Shirt in Black Brawn Men's DLX Quick Dry Long Sleeve Active T-Shirt in Black
    Brawn Men's DLX Quick Dry Long Sleeve Active T-Shirt in Black
    £24.99 Was £47.99
  44. Endeavor Women's Long Sleeve Thermal T-Shirt in Pink Endeavor Women's Long Sleeve Thermal T-Shirt in Pink
    Endeavor Women's Long Sleeve Thermal T-Shirt in Pink
    £24.99 Was £49.99
  45. Rad Kids Base Layer Pants in Pink
    Rad Kids Base Layer Pants in Pink
    £7.99 Special Price
  46. Keenan Men's Quick Dry Active Top in Black
    Keenan Men's Quick Dry Active Top in Black
    £14.99 Special Clearance Price
  47. Striding Womens Black Running Shorts in Black
    Striding Womens Black Running Shorts in Black
    £12.99 Special Price
  48. Flex360 Kids' Thermal Top in Black
    Flex360 Kids' Thermal Top in Black
    £10.99 Was £15.99
    2 colours

1 - 48 of 63 items

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Trespass Base Layers

A range of thermal base layers, merino wool base layers and mid layers for all activities including hiking, skiing and running. Base layers work by acting as a second skin and wicking away moisture, such as sweat, to keep you dry and comfortable when getting active in a variety of climes and conditions. Ensure your base layer fits snugly to maximise its body regulating benefits.

Expert Advice

The Ultimate Base Layers Guide

VIEW ALL EXPERT ADVICE BLOGS

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  1. Merino Wool Base Layers 11 items
Size
XXS 30
XS 34
S 34
M 34
L 33
XL 34
XXL 33
XXXL 7
XS/S 1
S/M 1
M/L 2
L/XL 1
2/3 23
3/4 21
5/6 22
7/8 21
9/10 21
11/12 21
3XS 1
XL/XXL 1
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