Sand Socks Vincere Soft-Soled Beach Socks (Toddler/Child) Top quality materials and construction for durability Protect feet from hot sand, mud, blisters, sunburn Improve performance for beach volleyball, sand sports, snorkeling Neoprene sole with lycra upper, adjustble cuff Choose by shoe size: Small (US Toddler 2 - 5 1/2), Medium (US Toddler 6 - 8 1/2), Large (US Toddler 9 - 11), XL (US Toddler 11 1/2 - 13)