SIZE CHART: UK3.5-4/EU36-37 = Insole Length 8.46in = EU 36-37 UK5-6 / EU38-39= Insole Length 9.17in = EU 38-39 UK6.5-7.5/EU40-41 = Insole Length 9.69in = EU 40-41 UK8-9 / EU42-43 = Insole Length 10.20in = EU 42-43 UK9.5-10.5/EU44-45 = Insole Length 10.71in = EU 44-45 VIFUUR Water Sports Shoes Barefoot Quick-dry Aqua Socks Slip-on for Men Women Girls boys Quick-dry water shoes. High quality rubber with thick foam arch-support inside of them. Flexible but sturdy enough to protect your feet from stepping on rock and stone. ---------------------------------------------- VIFUUR ANTI-SLIP OUTSOLE: The anti-slip rubber sole, with an ergonomically molded, shock absorption performance cushioning separated protective toe guard. ---------------------------------------------- VIFUUR Water Sports Shoes Barefoot Quick-dry Aqua Socks Slip-on for Men Women Kids 1.VIFUUR aqua socks are lightweight. Perfect Fit and Soft: material do water activities comfortably. 2.VIFUUR quick-dry water shoes, breathable and smooth fabrics with fine stretch on uppers. These shoes are designing multiple patterns and colors to meet different people’s taste. 3.OCCASION:Beach, swimming, pool, weight training, wake-boarding, sailing, boating, cycling, jogging, walking, fishing, beach volleyball, gardening, lawn, car-washing and driving, surf, scuba, snorkeling, beach walking, yoga, weatherboarding, kayaking, windsurfing, fin socks, shower, bathroom and etc ------------------------------------------------ About VIFUUR Water Swimming Shoes Aqua socks for Men, Women, Kids, Boys, Girls, and, Adults.