Small sock = Men's shoe 3-5.5 / Women's shoe 4-6.5
Medium sock = Men's shoe 6-9 / Women's shoe 7-9.5
Large sock = Men's shoe 9.5 - 12.5 / Women's shoe 10-13
XLarge sock = Men's shoe 13+ / Women's shoe 13.5+
 
Our Survival Sock is a terry loop lined mid-weight sock designed for a wide range of outdoor activities and climates. The soft alpaca terry loops are combined with a durable nylon outer shell. Reinforced foot arch band and a ribbed knit ankle support ensure a proper fit every time. This warm and comfortable sock is our best selling style across the country! Hypo-allergenic, un-dyed, and odor resistant.