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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117 products

  • Sail White coloured Craghoppers Mens NosiLife Nour Long Sleeved T-Shirt on white background Sail White coloured Craghoppers Mens NosiLife Nour Long Sleeved T-Shirt on white background
    Craghoppers Mens NosiLife Nour Long Sleeved T-Shirt
    £19.95
    £40.00
    £19.95
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    New Arrival
  • 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
    £24.95
    £30.00
    £24.95

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  • 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
    £28.95
    £39.95
    £28.95

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    Sale
  • Atlas Red coloured Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt on white background Atlas Red coloured Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt on white background
    Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt
    £25.95
    £45.00
    £25.95

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    Sale
  • Black Coloured Icebreaker Mens Merino 260 Tech Crewe Thermal Top on white background Black Coloured Icebreaker Mens Merino 260 Tech Crewe Thermal Top on white background
    +2
    Icebreaker Mens Merino 260 Tech Crew Thermal Top
    £79.95
    £105.00
    £79.95
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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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  • 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 Stripe Long Sleeve Crew Base Layer on white background Black Coloured Helly Hansen Mens Lifa Stripe Long Sleeve Crew Base Layer on white background
    Helly Hansen Mens Lifa Stripe Long Sleeve Crew Base Layer
    £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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  • 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
  • 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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  • Shadow Brown Coloured Harkila Base All Season Short Sleeve T-Shirt on white background Shadow Brown Coloured Harkila Base All Season Short Sleeve T-Shirt on outdoor background
    Harkila Base All Season Short Sleeve T-Shirt
    £59.99
    £59.99
    £59.99
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  • Navy coloured Regatta Professional Mens 65/35 Long Sleeves Polo Top on white background Navy coloured Regatta Professional Mens 65/35 Long Sleeves Polo Top on outdoor background
    Regatta Professional Mens 65/35 Polo Shirt
    £9.95
    £20.00
    £9.95
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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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  • HJ Hall 3 Pack Pure Cotton Fly-Front Briefs in Navy HJ Hall 3 Pack Pure Cotton Fly-Front Briefs in Navy
    HJ Hall 3 Pack Pure Cotton Fly-Front Briefs
    £18.95
    £30.00
    £18.95
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    Sale
  • Black coloured Craghoppers Mens Merino Baselayer Leggings on white background Black coloured Craghoppers Mens Merino Baselayer Leggings on white background
    Craghoppers Mens Merino Baselayer Leggings
    £25.00
    £50.00
    £25.00
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    Sale
  • Multi Coloured Hard Yakka Mens Cotton Trunk Five Pack on White Background Multi Coloured Hard Yakka Mens Cotton Trunk Five Pack on White Background
    Hard Yakka Mens Cotton Trunk Five Pack
    £19.95
    £25.99
    £19.95
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  • Khaki coloured Percussion Megadry Sweatshirt on white background Black coloured Percussion Megadry Sweatshirt on white background
    Percussion Megadry Sweatshirt
    £16.95
    £20.00
    £16.95

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    Sale
  • 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
  • Khaki coloured Percussion Megadry Long Johns on white background Black coloured Percussion Megadry Long Johns on white background
    Percussion Megadry Long Johns
    £15.95
    £20.00
    £15.95

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    Sale
  • Black Yellow Charcoal Coloured Caterpillar Boxer Shorts Twin Pack on White Backgroud
    Caterpillar Boxer Shorts Twin Pack
    £11.00
    £14.99
    £11.00
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  • Navy Coloured Helly Hansen Mens Lifa Active Solen Base Layer on white background Navy Coloured Helly Hansen Mens Lifa Active Solen Base Layer on white background
    Helly Hansen Mens Lifa Active Solen Base Layer
    £43.95
    £60.00
    £43.95
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    Ski Free
  • Brown coloured Northern Hunting Mens Vidar Baselayer Pants on white background Brown coloured Northern Hunting Mens Vidar Baselayer Pants on white background
    Northern Hunting Mens Vidar Baselayer Pants
    £45.00
    £45.00
    £45.00
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  • Dark Green coloured Northern Hunting Norr Vik Long Sleeve Baselayer Top on white background Dark Green coloured Northern Hunting Norr Vik Long Sleeve Baselayer Top on forest background
    Northern Hunting Norr Vik Long Sleeve Baselayer Top
    £59.00
    £59.00
    £59.00
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  • Dark Green coloured Northern Hunting Norr Fal Baselayer Pants on white background Dark Green coloured Northern Hunting Norr Fal Baselayer Pants on forest background
    Northern Hunting Norr Fal Baselayer Pants
    £59.00
    £59.00
    £59.00
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  • 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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  • Pine Green Coloured Seeland Mens Apex One Hundred Long Johns on white background Pine Green Coloured Seeland Mens Apex One Hundred Long Johns on outdoor background
    Seeland Mens Apex One Hundred Long Johns
    £62.95
    £69.99
    £62.95
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  • Pine Green Melange Coloured Seeland Peak Half Zip on white background Pine Green Melange Coloured Seeland Peak Half Zip on outdoor background
    Seeland Peak Half Zip Top
    £44.95
    £49.99
    £44.95
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  • Black Coloured Elka Mens Thermal Base Layer Under Trousers on white background
    Elka Mens Thermal Base Layer Under Trousers
    From £15.95
    £44.90
    From £15.95
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  • Black coloured Hj Hall Cotton Rich Thermal Long Johns on white background Black coloured Hj Hall Cotton Rich Thermal Long Johns on white background
    HJ Hall Cotton Rich Thermal Long Johns
    £15.95
    £30.00
    £15.95
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  • Black coloured HJ Hall Mens Cotton Rich Thermal Long Sleeve Top on white background Black coloured HJ Hall Mens Cotton Rich Thermal Long Sleeve Top on white background
    HJ Hall Mens Cotton Rich Thermal Long Sleeve Top
    £15.95
    £30.00
    £15.95
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    Sale
  • Black coloured HJ Hall Mens Cotton Rich Thermal T-shirt on white background Black coloured HJ Hall Mens Cotton Rich Thermal T-shirt on white background
    HJ Hall Mens Cotton Rich Thermal T-shirt
    £12.75
    £24.00
    £12.75
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    Sale
  • Black coloured HJ Hall Mens Cotton Rich Thermal Vest Twin Pack on white background Black coloured HJ Hall Mens Cotton Rich Thermal Vest Twin Pack on white background
    HJ Hall Mens Cotton Rich Thermal Vest Twin Pack
    £12.75
    £24.00
    £12.75
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    Sale
  • Midnight Coloured Line 7 Merino Leggings on white background Midnight Coloured Line 7 Merino Leggings on white background
    Line 7 Merino Leggings
    £54.99
    £54.99
    £54.99
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  • Midnight Silver Coloured Line 7 Mens Merino Long Sleeve Raglan T-Shirt Baselayer on white background Midnight Silver Coloured Line 7 Mens Merino Long Sleeve Raglan T-Shirt Baselayer on white background
    Line 7 Mens Merino Long Sleeve Raglan T-Shirt Baselayer
    £54.99
    £54.99
    £54.99
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  • Forest Green coloured Deerhunter Chamois Short Sleeve T-Shirt on white background Forest Green coloured Deerhunter Chamois Short Sleeve T-Shirt on forest background
    Deerhunter Chamois Short Sleeve T-Shirt
    £26.95
    £29.99
    £26.95
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  • Forest Green Coloued Deerhunter Chamois Long Sleeve T-Shirt on white background Forest Green Coloued Deerhunter Chamois Long Sleeve T-Shirt on forest background
    Deerhunter Chamois Long Sleeve T-Shirt
    £35.95
    £39.99
    £35.95
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  • Navy Coloured Helly Hansen Mens Lifa Active Crew Base Layer on white background Navy Coloured Helly Hansen Mens Lifa Active Crew Base Layer on white background
    Helly Hansen Mens Lifa Active Crew Base Layer
    £37.95
    £50.00
    £37.95
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    Ski Free
  • Navy Coloured Helly Hansen Mens Lifa Merino Midweight Crew Base Layer on white background Black Coloured Helly Hansen Mens Lifa Merino Midweight Crew Base Layer on white background
    Helly Hansen Mens Lifa Merino Midweight Crew Base Layer
    £64.95
    £85.00
    £64.95

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    Ski Free
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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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