Keep your feet warm through the harshest winter weather with our Mens Arctic Max 30-Below Thermal Sock and Liner Combo. This combo pairs a cushioned, merino-wool blend thermal sock with a moisture-wicking liner for warm and comfortable protection on the coldest work days or hunts. Provides the natural temperature regulating insulation and odor-fighting performance of merino wool. Liner socks feature CoolMax polyester fibers to keep feet dry even during periods of high exertion. Thermal sock is 56% nylon, 43% merino wool and 1% spandex. Liner sock is 62% CoolMax polyester, 35% nylon and 3% spandex. Machine wash warm, inside out. Tumble dry. Made in USA. Sizes: M-XL. Color: Brown.