There's lots of Long Johns out there: polyester, cotton and every blend in between. Truth is, superfine Merino wool absorbs better, stays drier...more info

Medium weight 2-layer fabric of 50% cotton, 50% polyester. Form fitting rib knit cuffs....more info

Terramar® Kid's Stretch Thermolator Crew Top Stay warm and dry in the Kid's Thermolater Crew Top. Features / Specifications • 92%...more info

The “original” Hot Chillys in the can enters its third generation with 56% MTF Micro denier polyester, 35% Bio-Silver® polyester...more info

Weather Rating: COLD 50% Cotton/50% Polyester - the original waffle knit thermal traps and retains body heat for comfortable warmth. Reinforced...more info

Smartwool's heaviest line, Midweight, is perfect for forays into alpine environments where temperatures -- and schedules -- fluctuate. Comfortable...more info

Weather Rating: VERY COLD Picture Shows Advantage Timber Advantage Camo Thermal Top. Advantage Brown or Advantage Timber. One of the world's...more info

MTF3000 has a soft, lived-in cotton like feel made of 92% polyester and with just enough Lycra to retain its shape. It can be washed and worn...more info

Cotton Comfort and warmth. Highest quality constrction features. Insulating air pockets trap body warmth. Extra heavy weight over 9 ounch warmth...more info