Dual-System Crew FootHuggers are a two sock system. A Premium X-Static crew polyproplene liner sock is included in the set. The liner becomes your 1st layer next to your skin. The FootHugger sock becomes your 2nd layer. The Dual-System is recommended for very cold conditions. Perfect for construction, police, snowmobilers, skiers, or anyone working or playing outside all day. Small fits women shoe sizes 4-7.5 Medium fits women's 8 - 10; Men's 7 - 10 Large fits Women's 11-13; Men's 10.5 - 12 X-Large fit men's 12 - 16 |