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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85 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 £34.95
    £44.95
    From £34.95
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    Sale
  • 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
    £34.95
    £39.95
    £34.95
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  • 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
    Icebreaker Mens Merino 260 Tech Crewe Thermal Top
    £81.95
    £105.00
    £81.95
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    New Arrival
  • Black Coloured Icebreaker Mens Merino 200 Oasis Crewe Short Sleeve Thermal Top on white background Black Coloured Icebreaker Mens Merino 200 Oasis Crewe Short Sleeve Thermal Top on white background
    Icebreaker Mens Merino 200 Oasis Crewe Short Sleeve Thermal Top
    £57.95
    £75.00
    £57.95
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  • 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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  • Navy Marl Coloured Ridgeline Mens Baseline Pull on Zip Top On A White Background Navy Marl Coloured Ridgeline Mens Baseline Pull on Zip Top On A Field Background
    Ridgeline Baseline Pull On Zip Top
    £29.95
    £34.99
    £29.95
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    New Arrival
  • Black Coloured Helly Hansen Mens Lifa Active Stripe Crew Base Layer on white background Black Coloured Helly Hansen Mens Lifa Active Stripe Crew Base Layer on white background
    Helly Hansen Mens Lifa Active Stripe Crew Base Layer
    £39.95
    £50.00
    £39.95
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  • Black Coloured Icebreaker Mens Merino 260 Tech Thermal Leggings on white background Black Coloured Icebreaker Mens Merino 260 Tech Thermal Leggings on white background
    Icebreaker Mens Merino 260 Tech Thermal Leggings
    £95.00
    £105.00
    £95.00
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  • Shadow Brown Harkila Base Mesh Crew Neck on white background Shadow Brown Harkila Base Mesh Crew Neck on door background
    Harkila Base Mesh Crew Neck
    £119.99
    £119.99
    £119.99
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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
    Icebreaker Mens Merino 200 Oasis Crewe Thermal Top
    £70.95
    £85.00
    £70.95
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    Sale
  • Smokey Olive Marl Coloured Ridgeline Mens Baseline Top On A White Background Smokey Olive Marl Coloured Ridgeline Mens Baseline Top On A Field Background
    Ridgeline Baseline Top
    £24.95
    £29.99
    £24.95
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    New Arrival
  • 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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  • Harkila All Season Long Johns Base Layer in Shadow Brown Harkila All Season Long Johns Base Layer in Shadow Brown
    Harkila All Season Long Johns Base Layer
    £129.99
    £129.99
    £129.99
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  • Willow Green Shadow Brown Harkila Base Warm Zip Neck on white background Willow Green Shadow Brown Harkila Base Warm Zip Neck on white background
    Harkila Base Warm Zip Neck
    £119.99
    £119.99
    £119.99
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  • Dark Grey Marl coloured Musto Mens Thermal Base Layer Trouser on white background Dark Grey Marl coloured Musto Mens Thermal Base Layer Trouser on white background
    Musto Mens Thermal Base Layer Trouser
    £59.95
    £70.00
    £59.95
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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
    £59.95
    £75.00
    £59.95
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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
    £39.95
    £50.00
    £39.95
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  • Black coloured Deerhunter Heat Undershirt with Zip Neck on white background Black coloured Deerhunter Heat Undershirt with Zip Neck on woody background
    Deerhunter Heat Undershirt with Zip Neck
    £107.95
    £119.99
    £107.95
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  • Deerhunter Norden Insulated Long Johns in Brown Melange Deerhunter Norden Insulated Long Johns in Brown Melange
    Deerhunter Norden Insulated Long Johns
    £35.95
    £39.99
    £35.95
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  • Black coloured Deerhunter Heat Long Johns on white background Black coloured Deerhunter Heat Long Johns on white background
    Deerhunter Heat Long Johns
    £98.95
    £109.99
    £98.95
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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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  • 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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  • Blue coloured Fort Thermal Long Johns on white background Blue coloured Fort Thermal Long Johns on white background
    Fort Thermal Long Johns
    £5.45
    £7.95
    £5.45
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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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    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
    £64.95
    £80.00
    £64.95
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    New Arrival
  • Navy Coloured Helly Hansen Mens Lifa Merino Midweight Crew Base Layer on white background Alpine Frost Coloured Helly Hansen Mens Lifa Merino Midweight Crew Base Layer on white background
    Helly Hansen Mens Lifa Merino Midweight Crew Base Layer
    £67.95
    £85.00
    £67.95
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    New Arrival
  • Navy coloured Helly Hansen Mens HP Half Zip Pullover Shirt on white background Gold Rush coloured Helly Hansen Mens HP Half Zip Pullover Shirt on white background
    +5
    Helly Hansen Mens HP Half Zip Pullover Shirt
    £49.95
    £60.00
    £49.95
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  • 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
    £75.95
    £95.00
    £75.95
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  • Black coloured TuffStuff Elite Boxers on White Background Black coloured TuffStuff Elite Boxers on White Background
    TuffStuff Elite Boxers
    £3.50
    £4.95
    £3.50
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    Sale
  • Black Coloured Helly Hansen Mens Lifa Active Base Layer Pants on white background Black 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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  • HJ Hall 2 Pack Pure Cotton Woven Boxers in Navy Check HJ Hall 2 Pack Pure Cotton Woven Boxers in Navy Check
    HJ Hall 2 Pack Pure Cotton Woven Boxers
    £17.49
    £25.00
    £17.49
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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
    £31.95
    £40.00
    £31.95
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  • HJ Hall 3 Pack Pure Cotton Fly-Front Briefs in White HJ Hall 3 Pack Pure Cotton Fly-Front Briefs in Navy
    HJ Hall 3 Pack Pure Cotton Fly-Front Briefs
    £17.49
    £30.00
    £17.49
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  • InVis Green Coloured Seeland Active Camo Long Sleeve T-Shirt On A White Background InVis Green Coloured Seeland Active Camo Long Sleeve T-Shirt On A Forest Background
    Seeland Active Camo Long Sleeve T-Shirt
    £49.99
    £59.99
    £49.99
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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 white background
    Harkila Gorm Long Sleeve T-Shirt
    £49.99
    £49.99
    £49.99
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  • 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
    £67.95
    £85.00
    £67.95
    View product
    New Arrival
  • Helly Hansen Lifa Base Layer Crewneck in Black Helly Hansen Lifa Base Layer Crewneck in Black
    Helly Hansen Lifa Base Layer Crewneck
    £35.95
    £35.95
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  • Percussion Megadry Sweatshirt in Khaki Percussion Megadry Sweatshirt in Black
    Percussion Megadry Sweatshirt
    £16.95
    £22.95
    £16.95
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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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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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