Men's Base Layer / Underwear

Stay warm all winter with our collection of mens baselayers and thermals, including long johns, and versatile short or long sleeve tops. Choose from a wide range of sizes, styles, and materials such as merino wool.
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113 products

  • Green Coloured Hoggs of Fife 100% Merino Wool Long Sleeve Crew Neck Base Layer on white background Green Coloured Hoggs of Fife 100% Merino Wool Long Sleeve Crew Neck Base Layer on lake background
    Hoggs of Fife 100% Merino Wool Long Sleeve Crew Neck Base Layer
    £40.95
    £44.95
    £40.95

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    Sale
  • Green Coloured Hoggs of Fife 100% Merino Wool Short Sleeve Crew Neck Base Layer on white background Green Coloured Hoggs of Fife 100% Merino Wool Short Sleeve Crew Neck Base Layer on white background
    Hoggs of Fife 100% Merino Wool Short Sleeve Crew Neck Base Layer
    £26.95
    £39.95
    £26.95

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    Sale
  • Navy Coloured Helly Hansen Mens Lifa Merino Midweight Half-Zip Base Layer on white background Navy Coloured Helly Hansen Mens Lifa Merino Midweight Half-Zip Base Layer on white background
    Helly Hansen Mens Lifa Merino Midweight Half-Zip Base Layer
    £69.95
    £90.00
    £69.95
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    SaleSki Free
  • White Coloured Helly Hansen Mens Lifa Stripe Long Sleeve Crew Base Layer on white background White Coloured Helly Hansen Mens Lifa Stripe Long Sleeve Crew Base Layer on work space background
    Helly Hansen Mens Lifa Stripe Long Sleeve Crew Base Layer
    From £29.95
    £40.00
    From £29.95

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    Ski Free
  • Green Coloured Hoggs of Fife 100% Merino Wool Long Pants on white background Green Coloured Hoggs of Fife 100% Merino Wool Long Pants on white background
    Hoggs of Fife 100% Merino Wool Long Pants
    £40.45
    £44.95
    £40.45

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  • Woodland Green coloured Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt on white background Woodland Green coloured Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt on white background
    +3
    Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt
    From £15.95
    £45.00
    From £15.95

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    Sale
  • Grey Fog coloured Helly Hansen Mens Tech Crew Long Sleeve T-Shirt 2.0 on white background Grey Fog coloured Helly Hansen Mens Tech Crew Long Sleeve T-Shirt 2.0 on white background
    +1
    Helly Hansen Mens Tech Crew Long Sleeve T-Shirt 2.0
    From £24.95
    £30.00
    From £24.95

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  • Shadow Brown Coloured Harkila All Season Half Zip Base Layer on white background Shadow Brown Coloured Harkila All Season Half Zip Base Layer on mountain background
    Harkila All Season Half Zip Base Layer
    £129.99
    £129.99
    £129.99
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  • Black Coloured Icebreaker Mens Merino 200 Oasis Crewe Thermal Top on white background Black Coloured Icebreaker Mens Merino 200 Oasis Crewe Thermal Top on mountain background
    +3
    Icebreaker Mens Merino 200 Oasis Crew Thermal Top
    From £64.95
    £85.00
    From £64.95
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    Sale
  • Black Coloured Helly Hansen Mens Lifa Merino Midweight 2-In-1 Base Layer Pants on white background Navy Coloured Helly Hansen Mens Lifa Merino Midweight 2-In-1 Base Layer Pants on white background
    Helly Hansen Mens Lifa Merino Midweight Base Layer Pants
    £59.95
    £80.00
    £59.95
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    Ski Free
  • Gritstone Heather Coloured Icebreaker Mens Merino 200 Oasis Crew Short Sleeve Thermal Top on white background Gritstone Heather Coloured Icebreaker Mens Merino 200 Oasis Crew Short Sleeve Thermal Top on white background
    Icebreaker Mens Merino 200 Oasis Crew Short Sleeve Thermal Top
    £59.50
    £75.00
    £59.50
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  • Black Coloured Helly Hansen Mens Lifa Lightweight Base Layer Pants on white background Black Coloured Helly Hansen Mens Lifa Lightweight Base Layer Pants on white background
    Helly Hansen Mens Lifa Lightweight Base Layer Pants
    £29.95
    £40.00
    £29.95
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    Ski Free
  • Dark Olive coloured Jack Pyke Mens Half Zip Sweatshirt on white background Dark Olive coloured Jack Pyke Mens Half Zip Sweatshirt on white background
    Jack Pyke Mens Half Zip Sweatshirt
    £37.50
    £37.50
    £37.50
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    New Arrival
  • Black Coloured Icebreaker Mens Merino 200 Oasis Half Zip Thermal Top on white background Black Coloured Icebreaker Mens Merino 200 Oasis Half Zip Thermal Top on white background
    Icebreaker Mens Merino 200 Oasis Half Zip Thermal Top
    £72.50
    £95.00
    £72.50
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  • Loden Coloured Icebreaker Mens Merino 200 Oasis Thermal Leggings on white background Loden Coloured Icebreaker Mens Merino 200 Oasis Thermal Leggings on white background
    Icebreaker Mens Merino 200 Oasis Thermal Leggings
    £67.90
    £85.00
    £67.90
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  • Black Coloured Icebreaker Merino 200 Flexi Chute on white background Black Coloured Icebreaker Merino 200 Flexi Chute on white background
    Icebreaker Merino 200 Flexi Chute
    £22.25
    £27.00
    £22.25
    Add to cart
  • Black Coloured Icebreaker Mens Merino 200 Oasis 3/4 Thermal Leggings on white background Black Coloured Icebreaker Mens Merino 200 Oasis 3/4 Thermal Leggings on white background
    Icebreaker Mens Merino 200 Oasis 3/4 Thermal Leggings
    £61.46
    £75.00
    £61.46
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  • Navy Marl Coloured Ridgeline Baseline Pull On Zip Top on white background Navy Marl Coloured Ridgeline Baseline Pull On Zip Top on outdoor background
    Ridgeline Baseline Pull On Zip Top
    £27.95
    £34.99
    £27.95
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  • InVis Green Coloured Seeland Active Camo Long Sleeve T-Shirt on white background InVis Green Coloured Seeland Active Camo Long Sleeve T-Shirt on forest background
    Seeland Active Camo Long Sleeve T-Shirt
    £53.95
    £59.99
    £53.95
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  • Hunting Green Shadow Brown Coloured Harkila Forest Hunter Long Sleeve T-Shirt on white background Hunting Green Shadow Brown Coloured Harkila Forest Hunter Long Sleeve T-Shirt on white background
    Harkila Forest Hunter Long Sleeve T-Shirt
    £59.99
    £59.99
    £59.99
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  • Willow Green Coloured Harkila Gorm Long Sleeve T-Shirt on white background Willow Green Coloured Harkila Gorm Long Sleeve T-Shirt on outdoor background
    Harkila Gorm Long Sleeve T-Shirt
    £49.99
    £49.99
    £49.99

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  • Black Coloured Icebreaker 200 Oasis Glove Liners on white background Black Coloured Icebreaker 200 Oasis Glove Liners on white background
    Icebreaker 200 Oasis Glove Liners
    £24.95
    £33.00
    £24.95
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    Sale
  • EVO coloured Quick Wick Armour Top on white background EVO coloured Quick Wick Armour Top on forest background
    Jack Pyke Quick Wick Armour Top
    £14.95
    £18.95
    £14.95

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  • Pine Green Melange Coloured Seeland Mens Peak T-Shirt on white background Pine Green Melange Coloured Seeland Mens Peak T-Shirt on white background
    Seeland Mens Peak T-Shirt
    £35.95
    £39.99
    £35.95
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  • Washed Navy Coloured Helly Hansen Mens Lifa Merino Midweight Logo Base Layer on white background Washed Navy Coloured Helly Hansen Mens Lifa Merino Midweight Logo Base Layer on white background
    Helly Hansen Mens Lifa Merino Midweight Logo Base Layer
    £69.95
    £90.00
    £69.95
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    Ski Free
  • Shadow Brown Coloured Harkila Base Mesh Crew Neck on white background Shadow Brown Coloured Harkila Base Mesh Crew Neck on house background
    Harkila Base Mesh Crew Neck
    £99.99
    £119.99
    £99.99

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    Sale
  • Dark Grey Marl coloured Musto Mens Thermal Base Layer Long-Sleeve Top on white background Dark Grey Marl coloured Musto Mens Thermal Base Layer Long-Sleeve Top on white background
    Musto Mens Thermal Base Layer
    £57.95
    £75.00
    £57.95
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  • Navy Coloured Helly Hansen Mens Lifa Active Base Layer Pants on white background Navy Coloured Helly Hansen Mens Lifa Active Base Layer Pants on white background
    Helly Hansen Mens Lifa Active Base Layer Pants
    £34.95
    £45.00
    £34.95
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    Ski Free
  • Black Coloured Swazi Long Sleeve Micro Top on white background Black Coloured Swazi Long Sleeve Micro Top on white background
    Swazi Long Sleeve Micro Top
    £29.95
    £29.95
    £29.95
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  • Black Coloured Viper Mesh-Tech Armour Top on white background Black Coloured Viper Mesh-Tech Armour Top on white background
    +2
    Viper Mesh-Tech Armour Top
    £14.95
    £17.95
    £14.95

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  • Denim Blue coloured Regatta Mens Thermal Long Sleeve Vest on white background Denim Blue coloured Regatta Mens Thermal Long Sleeve Vest on white background
    Regatta Professional Mens Thermal Long Sleeve Vest
    £8.45
    £25.00
    £8.45
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  • Black Coloured Elka Mens Crew Neck Thermal Base Layer on white background Black Coloured Elka Mens Crew Neck Thermal Base Layer on outdoor background
    Elka Mens Crew Neck Thermal Base Layer
    From £15.95
    £22.35
    From £15.95
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    Sale
  • Olive Coloured Elka Mens Thermal Trousers on white background Olive Coloured Elka Mens Thermal Trousers on white background
    Elka Mens Thermal Trousers
    From £17.95
    £43.95
    From £17.95
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  • Regatta Thermal Long Johns in Denim Blue
    Regatta Professional Thermal Long Johns
    £8.95
    £8.95
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  • Black Coloured TuffStuff Basewear Long Sleeve T-Shirt On A White Background Black Coloured TuffStuff Basewear Long Sleeve T-Shirt On A Fitting Room Background
    TuffStuff Basewear Long Sleeve T-Shirt
    £8.45
    £12.95
    £8.45
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  • Denim Coloured Fort Thermal Long Sleeve Vest On A White Background White Coloured Fort Thermal Long Sleeve Vest On A White Background
    Fort Thermal Long Sleeve Vest
    £5.35
    £7.95
    £5.35

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  • Blue coloured Fort Thermal Long Johns on white background Blue coloured Fort Thermal Long Johns on white background
    Fort Thermal Long Johns
    £4.95
    £7.95
    £4.95

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  • Willow Green Black Coloured Harkila Heat Long Johns on white background Willow Green Black Coloured Harkila Heat Long Johns on white background
    Harkila Heat Long Johns
    £219.99
    £219.99
    £219.99
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  • Green coloured Jack Pyke Mens Cotton T-Shirt on white background Green coloured Jack Pyke Mens Cotton T-Shirt on white background
    Jack Pyke Mens Cotton T-Shirt
    £15.95
    £17.95
    £15.95
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    New Arrival
  • Navy coloured Hard Yakka Mens Heritage Icon Singlet on white background Navy coloured Hard Yakka Mens Heritage Icon Singlet on outdoor background
    Hard Yakka Mens Heritage Icon Singlet
    £15.95
    £17.99
    £15.95
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Men's base layers, also known as thermals or thermal underwear, are essential garments for braving the harshest climates during outdoor activities.

These base layers are designed to provide warmth and comfort by trapping body heat close to the skin. Whether you're working out on the farm in the early winter mornings or heading for a hike through the snow, these mens thermals are a must-have item.

Stocking top brands like Fort and Deerhunter, this collection holds a wide range of options, from long-sleeved tops to long johns and merino wool base layers. Each garment is made from high-quality materials with excellent moisture-wicking properties to keep you dry and regulate your body temperature, preventing you from feeling too hot or too cold.

Layering can make all the difference when it comes to effective performance, and these base layers for men are the ideal starting point. Stay warm, stay comfortable, and enjoy the great outdoors to the fullest!

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