Vincere Grip Socks Soft-Soled Beach and Boat Socks Top quality materials and construction for durability; rough grippy sole is more durable than the original Sand Socks. Protect feet from hot sand, mud, blisters, sunburn Improve performance for beach volleyball, sand sports, snorkeling Neoprene sole with lycra upper, adjustble cuff Size XXS: Mens/boys US 1-2 (Womens 1-3). Size XS: Mens/boys US 2.5-4 (Womens 3.5-6). Size Small: Mens/boys US 4.5-6.5 (Womens 6.5-8.5). Size Medium: Mens US 7-10 (Womens 9-11.5). Size Large: Mens US 10.5-12. Size XL: Mens US 12.5-14. Size XXL: Mens US 14.