Men's Thermals
Long johns and thermal sets for cold weather.
Base layers for cold weather. A thermal works by trapping air against the skin, which only happens if it fits close — a loose thermal is just an extra layer, not a warm one.
112 products
Showing 12 of 112 products
Thermal Bottoms & Long JohnsAutumn
Men's Thin Slim-Fit 2-in-1 Thermal Bottoms & Long Johns | dmunderwear
$14.57
Thermal Bottoms & Long JohnsAutumn
Men's Underwear-free Cotton Warm Bottoms | dmunderwear
$15.50
Thermal Bottoms & Long JohnsAutumn
Men's Pure Cotton Open Crotch Breathable Warm Pants | dmunderwear
$13.50
Thermal Bottoms & Long JohnsAutumn
Men's Split-opening Pouch Thermal Pants | dmunderwear
$16.00
Thermal Bottoms & Long JohnsAutumn
Men's Star Print Cotton Thermal Pants | dmunderwear
$17.00
Thermal Bottoms & Long JohnsAutumn
Men's Thermal Pants Bamboo Fiber Casual Thermal Pants | dmunderwear
$17.00
Thermal Bottoms & Long JohnsAutumn
2-pack Men's Large Size High Elastic U-shaped Convex Pocket Warm Cropped Trousers | dmunderwear
$17.00
Thermal Bottoms & Long JohnsAutumn
Men's Pure Cotton Breathable Warm Pants | dmunderwear
$15.50
Thermal Bottoms & Long JohnsAutumn
Men's Camouflage Cotton Long Johns with Side Stripes | dmunderwear
$19.44
Long JohnsDrawstring
Striped Mesh Tights | dmunderwear
$14.85
ActivewearActivewear
Brave Person Two-Toned Long Johns | dmunderwear
$19.13
ActivewearLong johns
Show-It Thermal Long Johns | dmunderwear
$19.13
What to check
- Fit — close to the skin, or the insulation does not work
- Fabric — brushed insides hold more warmth
- Seams — flat seams matter more under other layers
Sizing
Sizing follows waist measurement rather than the size you usually buy — cuts are graded differently between makers, and two pairs labelled the same can sit very differently. The measurement for each style is on its product page.