SmartWool Men's / Women's Athletic Lightweight Quarter Socks stand the test of time with long-lasting comfort and classic styling Taking its cue from the sheep of New Zealand, these ultra-soft fibers contain tiny air pockets that keep feet cooler when it's hot and warmer when it's cold. Moisture moves while it's still vapor, so feet stay dry. This soft, ribbed, athletic quarter sock cushions your steps, while a reinforced sole adds durability. The Smartfit system ensures extra support around the arch and ankle.