Stanfield's merino wool blend 2 layer long underwear provides maximum overall warmth and has no itch factor. Air trapped between layers is a great insulator.
Athletic Works Men's 2 Layer Wool Blend Thermal Long John
Stanfield's Men's Heavy Weight Wool Rib Knit Long Underwear
Stanfield's Superwash Wool Long Underwear
Stanfield's Men's Superwash Wool Long Underwear
Stanfield's Plaza Del Caribe
Stanfield's Men's Heavy Weight Wool Rib Knit Long Underwear
Men's Two Layer Wool Blend Base Layer Pants - Stanfield's
Stanfield's Men's Superwash Wool Long Sleeve Shirt, Natural, M White : : Clothing, Shoes & Accessories
Stanfield's Men's Cotton Blend Two Layer Base Layer Long Sleeve Shirt, Charcoal, XLarge : : Clothing, Shoes & Accessories
Stanfield's, Other, Like New Stanfields Irregular Two Layer Long Underwear
Stanfield's Men's 2 Layer Cotton Blend Thermal Long Johns