Men's Thermals - Fleece Lined Base Layer Top and Long Johns Set
Men's Thermals - Fleece Lined Base Layer Top and Long Johns Set
Black / S
£34.95£57.95
Men's thermals set in Black, long sleeve top and long bottoms
Man pulling on wool socks in a mountain hut, wearing the black fleece lined thermal top and bottoms, with snow capped mountains through the window
Benefits of the men's thermals: brushed fleece lining, four-way stretch and breathable knit
Men's thermals set in Black with Gray Piping, long sleeve top and long bottoms
Men's thermals set in Beige with a gray printed pattern, long sleeve top and long bottoms

Men's Thermals - Fleece Lined Base Layer Top and Long Johns Set

Regular price £57.95 Sale price£34.95 Save 40%
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Size
Men's Thermals - Fleece Lined Base Layer Top and Long Johns Set
Size Charts
SIZETO-FIT CHESTTO-FIT WAIST
S36-38in (91-97cm)30-32in (76-81cm)
M38-40in (97-102cm)32-34in (81-86cm)
L41-44in (104-112cm)35-38in (89-96cm)
XL44-47in (112-120cm)38-41in (96-104cm)
2XL47-50in (119-127cm)41-44in (104-112cm)
3XL50-53in (127-135cm)44-47in (112-120cm)
TO-FIT is your body measurement. This is a tight-fitting stretch set; between two sizes choose the larger one.
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These men's thermals are a fleece lined thermal underwear set, a long sleeve top and long bottoms in a close stretch knit, made for freezing bike commutes, early shifts and winter walks. They sit flat under your clothes and hold your warmth when cold wind cuts through everyday trousers and jackets.

The knit blends polyester and elastane, so it stretches in four directions and snaps back into place instead of sagging. A brushed fleece interior holds trapped body warmth right against your skin, and the maker rates the set down to -15°C (5°F). The tight-fitting cut follows your body from shoulder to ankle, with flat close-fitting hems that stay smooth under slim jeans and work trousers.

Worried a warm base layer means extra bulk? This set hugs the body closely, so nothing bunches around your knees or binds at your shoulders when you lean over the handlebars or climb into a van. Afraid it will turn clammy the minute you start moving? The knit breathes as your heart rate climbs, so heat moves out instead of building up as damp on your skin.

Wear it under a commuter jacket on frozen morning rides, under work trousers on an outdoor job or under your shell on a winter hike, so you stay warm without dressing in bulky layers.

Key Features:

  • A brushed fleece lining holds your body warmth against your skin from the first cold minute.
  • The maker rates this thermal underwear set down to -15°C (5°F) for freezing routes and cold work sites.
  • Four-way stretch knit moves with your knees and hips and snaps back instead of bunching.
  • A tight-fitting low-bulk cut slides under slim jeans, work trousers and button-down shirts.
  • Flat close-fitting hems help prevent friction under snug trouser legs and backpack straps.
  • Breathable knit lets heat escape on long climbs so damp does not build up on your skin.
  • The long sleeve top and long bottoms come together as one complete two-piece set.
  • Choose plain Black, Black with Grey Piping or Beige with a grey printed pattern.

Activearo makes cold-weather gear for people who keep moving when the temperature drops, and this set is the layer that goes on first.

Pair it with our thick plush lined thermal socks and fleece lined neck warmer for the coldest mornings.

Free shipping in the United States and the United Kingdom.

Check our Shipping Policy for more information.

If you decide to return the items for whatever reason you may do so within 30 days from the day that you received them. Read more in our Return and Refund Policy.

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FAQs

Sizing can vary from piece to piece. If there's a size chart on the page, that's your best guide. Not sure, or between sizes? Email us your usual size or measurements and we'll point you to the right one. Quicker than guessing.

Yes. If it doesn't fit or isn't what you expected, send it back within 30 days of delivery for a refund or exchange.

Every piece is picked for real field use. Trail, water, and hunt, not the shelf. Check the specs on this page for the exact materials and features so you know what it's made for.

Ask us about fit, fabric, or specs, email info@activearo-outdoor.com or use our contact page and a real person gets back to you.

Once it ships, you'll get a tracking link by email so you can follow your package the whole way. You can also track anytime at activearo-outdoor.com/apps/parcelpanel with your order number.

Most of our apparel: machine wash cold, hang dry, skip the bleach and the iron. Always follow the care label on your specific item.

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