PRICES MAY VARY. Acrylic Blend Imported Machine Wash 2 Pack or 4 Pack Thermal Winter Socks: This pack of DG Hill thermal socks are thick and warm for extreme temperatures. The interior is lined with plush brushed fleece that is cozy and soft on your feet. The insulating thermal yarn traps heat and keeps feet warm even in the coldest environments and is 7X warmer than cotton socks. Perfect Cold weather boot and ski socks for men and women, these socks have superior heat retention for the brutal c