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
    From £35.95
    £44.95
    From £35.95
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  • 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
    £39.95
    £44.95
    £39.95
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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
    £35.95
    £39.95
    £35.95
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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 white background
    +3
    Icebreaker Mens Merino 200 Oasis Crewe Thermal Top
    From £64.95
    £85.00
    From £64.95
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    Sale
  • Light Bark Marl Coloured Ridgeline Baseline Pull On Zip Top on white background Light Bark 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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  • Navy Coloured Helly Hansen Mens Lifa Stripe Long-Sleeve Crew Base Layer on white background Navy 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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  • Blue Stone coloured Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt on white background Blue Stone coloured Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt on white background
    +1
    Craghoppers Mens Nosilife Abel Long Sleeved T-Shirt
    £25.95
    £45.00
    £25.95
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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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    Sale
  • Black coloured Deerhunter Heat Undershirt with Zip Neck on white background Black coloured Deerhunter Heat Undershirt with Zip Neck on white background
    Deerhunter Heat Undershirt with Zip Neck
    £89.95
    £119.99
    £89.95
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    Sale
  • Black Coloured Icebreaker Mens Merino 200 Oasis Thermal Leggings on white background Black Coloured Icebreaker Mens Merino 200 Oasis Thermal Leggings on white background
    Icebreaker Mens Merino 200 Oasis Thermal Leggings
    From £65.00
    £85.00
    From £65.00
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  • Smokey Olive Marl Coloured Ridgeline Baseline Top on white background Smokey Olive Marl Coloured Ridgeline Baseline Top on outdoor background
    Ridgeline Baseline Top
    £24.95
    £29.99
    £24.95
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  • Green coloured Jack Pyke Mens Base Layer Set on white background Green coloured Jack Pyke Mens Base Layer Set on white background
    Jack Pyke Mens Base Layer Set
    £23.95
    £27.95
    £23.95
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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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  • 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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  • Willow Green Coloured Harkila Base All Season Long Sleeve T-Shirt On A White Background Willow Green Coloured Harkila Base All Season Long Sleeve T-Shirt On A Backyard Background
    Harkila Base All Season Long Sleeve T-Shirt
    £62.00
    £74.99
    £62.00
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    Sale
  • Black Coloured Icebreaker Unisex 200 Oasis Glove Liners on white background Black Coloured Icebreaker Unisex 200 Oasis Glove Liners on white background
    Icebreaker 200 Oasis Glove Liners
    £24.95
    £33.00
    £24.95
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    Sale
  • 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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  • Black coloured Icebreaker Mens Merino 200 Oasis Mid Calf Thermal Leggings on white background Black coloured Icebreaker Mens Merino 200 Oasis Mid Calf Thermal Leggings on white background
    Icebreaker Mens Merino 200 Oasis 3/4 Thermal Leggings
    £61.46
    £75.00
    £61.46
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  • Black Coloured Elka Mens Thermal Base Layer Under Trousers on white background
    Elka Mens Thermal Base Layer Under Trousers
    From £17.99
    £44.90
    From £17.99
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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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  • 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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  • 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
    £12.95
    £24.00
    £12.95
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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 Crewe Thermal Top
    From £81.95
    £105.00
    From £81.95
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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 £19.54
    £22.35
    From £19.54
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  • 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
    From £49.95
    £85.00
    From £49.95
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  • 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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  • 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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  • Navy coloured Helly Hansen Mens Tech Crew Long Sleeve T-Shirt 2.0 on white background Navy coloured Helly Hansen Mens Tech Crew Long Sleeve T-Shirt 2.0 on white background
    Helly Hansen Mens Tech Crew Long Sleeve T-Shirt 2.0
    £24.95
    £30.00
    £24.95
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  • Black Coloured Icebreaker Unisex 260 Tech Gloves Liner on white background Black Coloured Icebreaker Unisex 260 Tech Gloves Liner on white background
    Icebreaker 260 Tech Glove Liners
    £28.59
    £35.00
    £28.59
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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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  • 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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  • 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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  • 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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    New Arrival
  • Black Coloured Icebreaker Merino 200 Oasis Balaclava on white background Black Coloured Icebreaker Merino 200 Oasis Balaclava on white background
    Icebreaker Merino 200 Oasis Balaclava
    £23.95
    £27.00
    £23.95
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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 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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  • Brown Melange coloured Deerhunter Norden Fleece Jacket on white background Brown Melange coloured Deerhunter Norden Fleece Jacket on forest background
    Deerhunter Norden Fleece Jacket
    £24.95
    £69.99
    £24.95
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    Sale
  • Willow Green Shadow Brown Coloured Harkila Base Warm Zip Neck on white background Willow Green Shadow Brown Coloured Harkila Base Warm Zip Neck on countryside background
    Harkila Base Warm Zip Neck
    £107.00
    £119.99
    £107.00
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  • Black Coloured Icebreaker Mens Merino 260 Tech Half Zip Thermal Top on white background Black Coloured Icebreaker Mens Merino 260 Tech Half Zip Thermal Top on white background
    Icebreaker Mens Merino 260 Tech Half Zip Thermal Top
    £99.50
    £125.00
    £99.50
    View product
  • Ebony Coloured Helly Hansen Mens HP Half-Zip Pullover 2.0 on White Backgroumd Ebony Coloured Helly Hansen Mens HP Half-Zip Pullover 2.0 on White Backgroumd
    +1
    Helly Hansen Mens HP Half Zip Pullover 2.0
    £45.90
    £60.00
    £45.90
    View product
    Sale
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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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