Vincere Classic Grip Sand Socks Soft Soled Booties for Boating Beach Deck Sports Engineered for the boater, fisherman, water sports and beach sports athlete with a tougher, rougher sole than Sand Socks. Lightweight with a flexible, but durable sole, GRIP SOCKS provide balance, grip, and feel, while protecting feetfrom the elements. Offers protection against heat, cold, sharp objects, and dirt Spandex uppers let feet breathe and keep out sand, mud, and dirt. Grip Sock Sizing: XXS (Men's shoe size 1-2; Women's 1-3), XS (M: 2 1/2-4; W: 3 1/2-6), Small (M: 4 1/2-6 1/2; W: 6 1/2-8 1/2), Medium (M: 7-10; W: 9-11 1/2), Large (M: 10 1/2-12; W: 12-14), XL (M: 12 1/2-14; W: 14+), XXL (M: 14+)