For runners who prefer a lightweight sock, but something a bit more substantial than a liner, the SmartWool Running Ultra Lite Mini Crew sock is an outstanding choice. This unisex running sock is designed to eliminate slippage, offering elastic ankle and arch braces, a waffle knit instep, and ribbed cuff – all to hold the sock in place. The SmartWool Running Ultra Lite Mini Crew sock is a real workhorse when it comes to managing foot comfort. The SmartWool fibers rapidly move moisture, in fact while it's still in the vapor stage, to keep feet dry in hot conditions and warm in cold conditions.