High Quality Material : The swim hand paddle is made of high-quality PC material, which is strong and not easy to deform and light in weight, assist you in swimming without feel burdened. Flexible body to provide max comfort, great for swimming, diving, snorkeling and so on. Ergonomic Design : Grstltd swim paddles for lap swimming with convex design, provides increased traction with the water, ergonomically designed shape perfectly fits your hand shape. Swim hand paddles are durable and not easy to bend, feel smooth. Adjustable Straps : Adjustable hand strap is great for any size hand. The straps of swimming hand paddles are made of resin and have strong flexibility, allowing you to fix your hands while swimming, The strap can be adjusted, and you can adjust it to the most comfortable length according to the thickness of your palm. Makes Swimming Easy : Vent holes in the training paddles provide a natural feel of the water, so the fluidity of each stroke is unimpeded, low-impact will allow you to build muscle safely. With it, the speed of moving forward in the water will be effectively improved.