This item is designed for someone who wants a nonstop swim, to athletes who want a training work out. Suitable for all adults and children who want strength training. Lightweight and fast-drying. Comfortable ankle straps, perfect to solve that when ankle was scratched. Features - Color: Black. - Material: PE, cloth. - Size: 320.00X2.00X2.00cm/125.76X0.79X0.79inch (Stretch cord). - Two ankle straps wrap your ankle, the ankle straps are adjustable. - One stretch cord is long enough for adult or children. The cord is strong, suitable for both adults and children. - We added thick neoprene on the ankle strap. So when you swim , you will not fell scratch. - Comfortable ankle straps, perfect to solve that when ankle was scratched. - It is a good choice as a gift for people who want to strengthen swimming training.