Double Layer Thermals

Polarmax’s double layer thermals are constructed with two layers of fabric connected back to back with open spaces between the layers to trap and hold warm air. Expertly manufactured with Acclimate Dry fibers, our double-layer thermal clothing transports moisture away from the skin to keep you warm, dry, and very comfortable. The relaxed fit makes our dual-layer thermal underwear a great everyday garment or the perfect base layer for any adventure. Get your double layer insulated thermal underwear from us today!

Double Layer features:

  • Acclimate Dry fibers for moisture management
  • Double layer traps air between layers for extra warmth
  • Flat seam construction for seam strength and longevity
  • Versatile for sports or everyday warmth needs
  • Midweight warmth, relaxed fit 

14 products

  • Long John underwear mechanical stretch icon

    Mechanical Stretch

    The perfect balance of comfort and fit from our collections that offer mechanical stretch for easy movement.

  • Acclimate Dry Icon

    Acclimate Dry+

    Keeps you dry, warm and comfortable with our exclusive Acclimate Dry+ technology enabled by hydrophobic yarns that move moisture away from your body.

  • Polarmax Odor Blocking

    Odor Blocking

    Enhanced freshness and odor control - guaranteed for 20-30 washes.

  • Polarmax Warmer Icon

    Double Layer Midweight Warmth

    100% Polyester and 150 gsm, Double Layer delivers midweight warmth with two layers of fabric that trap air between the layers. Double Layer delivers extra warmth without extra weight.

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