Train your swimming skills more efficiently by using these Webbed Swimming Gloves Hand Flippers! Each set comes with a pair of these gloves! These flippers serve as weights when swimming. Because they have a webbed shape, they make it more difficult to swim through the water. With that, it trains the swimmer and helps him build muscle. Also, these gloves are of durable and comfortable-to-wear nylon material. They are also stretchable enough to fit most if not all sizes.