Collection: 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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86 products

  • Ridgeline Baseline Top
    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
    Regular price
    £24.95
    Regular price
    £29.99
    Sale price
    £24.95
    New Arrival
  • Deerhunter Heat Undershirt with Zip Neck
    Deerhunter Heated Undershirt with Zip Neck | Black Deerhunter Heated Undershirt with Zip Neck | Black
    Deerhunter Heat Undershirt with Zip Neck
    Regular price
    £107.95
    Regular price
    £119.99
    Sale price
    £107.95
  • Harkila Metso Long Sleeve T-Shirt
    Willow Green coloured Harkila Metso Long Sleeve T-Shirt on white background Willow Green coloured Harkila Metso Long Sleeve T-Shirt on white background
    Harkila Metso Long Sleeve T-Shirt
    Regular price
    £89.99
    Regular price
    £89.99
    Sale price
    £89.99
  • Swazi Micro Fleece Singlet
    Black Coloured Swazi Micro Fleece Singlet On A White Background Black Coloured Swazi Micro Fleece Singlet On A Forest Background
    Swazi Micro Fleece Singlet
    Regular price
    £24.95
    Regular price
    £24.95
    Sale price
    £24.95
    New Arrival
  • Harkila Logmar Insulated Packable Knee Breeches
    Willow Green Coloured Harkila Logmar Insulated Packable Knee Breeches On A White Background Willow Green Coloured Harkila Logmar Insulated Packable Knee Breeches On A Wooden House Background
    Harkila Logmar Insulated Packable Knee Breeches
    Regular price
    £229.99
    Regular price
    £229.99
    Sale price
    £229.99
    New Arrival
  • Icebreaker Mens Merino 260 Tech Crewe Thermal Top
    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
    Regular price
    £79.95
    Regular price
    £105.00
    Sale price
    £79.95
    New Arrival
  • Fort Thermal Long Johns
    Blue coloured Fort Thermal Long Johns on white background Blue coloured Fort Thermal Long Johns on white background
    Fort Thermal Long Johns
    Regular price
    £5.45
    Regular price
    £7.95
    Sale price
    £5.45
  • Deerhunter Heat Long Johns
    Heated longs johns Deerhunter Deerhunter Heated Long Johns | Black
    Deerhunter Heat Long Johns
    Regular price
    £98.95
    Regular price
    £109.99
    Sale price
    £98.95
  • Jack Pyke Mens Base Layer Set
    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
    Regular price
    £23.95
    Regular price
    £27.95
    Sale price
    £23.95
  • TuffStuff Elite Boxers
    Black coloured TuffStuff Elite Boxers on White Background Black coloured TuffStuff Elite Boxers on White Background
    TuffStuff Elite Boxers
    Regular price
    £3.50
    Regular price
    £4.95
    Sale price
    £3.50
    Sale
  • Harkila Base Warm Zip Neck
    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
    Regular price
    £119.99
    Regular price
    £119.99
    Sale price
    £119.99
  • Deerhunter Game Half-Zip Long Sleeve T-Shirt
    RealTree Max-7 camo Deerhunter Game Half-Zip Long Sleeve T-Shirt on White background RealTree Max-7 camo Deerhunter Game Half-Zip Long Sleeve T-Shirt on White background
    Deerhunter Game Half-Zip Long Sleeve T-Shirt
    Regular price
    £39.95
    Regular price
    £59.99
    Sale price
    £39.95
    Sale
  • Harkila Forest Hunter Long Sleeve T-Shirt
    Hunting Green Shadow Brown Coloured Harkila Forest Hunter Long Sleeve T-Shirt On A White Background Hunting Green Shadow Brown Coloured Harkila Forest Hunter Long Sleeve T-Shirt On A White Background
    Harkila Forest Hunter Long Sleeve T-Shirt
    Regular price
    £59.99
    Regular price
    £59.99
    Sale price
    £59.99
  • Harkila All Season Half Zip Base Layer
    Harkila All Season Half Zip Base Layer in Shadow Brown Harkila All Season Half Zip Base Layer in Shadow Brown
    Harkila All Season Half Zip Base Layer
    Regular price
    £129.99
    Regular price
    £129.99
    Sale price
    £129.99
  • Icebreaker Mens Merino 260 Tech Half Zip Thermal Top
    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
    Regular price
    £96.95
    Regular price
    £125.00
    Sale price
    £96.95
  • Icebreaker Mens Merino 260 Tech Thermal Leggings
    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
    Regular price
    £95.00
    Regular price
    £105.00
    Sale price
    £95.00
  • Caterpillar Thermo Long Sleeve Shirt
    Caterpillar Thermo Long Sleeve Shirt in Black
    Caterpillar Thermo Long Sleeve Shirt
    Regular price
    £13.99
    Regular price
    £17.99
    Sale price
    £13.99
  • TuffStuff Basewear Long Sleeve T-Shirt
    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
    Regular price
    £8.45
    Regular price
    £12.95
    Sale price
    £8.45
  • Musto Mens Thermal Base Layer
    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
    Regular price
    £59.95
    Regular price
    £75.00
    Sale price
    £59.95
  • Icebreaker Mens Merino 200 Oasis Crewe Short Sleeve Thermal Top
    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
    Regular price
    £57.95
    Regular price
    £75.00
    Sale price
    £57.95
    New Arrival
  • Seeland Active Camo Long Sleeve T-Shirt
    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
    Regular price
    £49.99
    Regular price
    £59.99
    Sale price
    £49.99
  • Harkila Gorm Long Sleeve T-Shirt
    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
    Regular price
    £49.99
    Regular price
    £49.99
    Sale price
    £49.99
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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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