1Because the resistance is small, a good streamline will produce a higher speed, which can create a better speed for the swimmer. Our swimming cap are very comfortable and can achieve the best performance, and the contour shape reduces frictional resistance, resulting in excellent hydraulic performance. 2Our swimming cap are carefully designed and professionally designed with three dimensional ergonomics to prevent pressure buildup and make you feel very comfortable when wearing them and enjoy the fun of swimming. 3The waterproof swimming cap with a PU coat will not tear your hair like silicone or latex, it is easier to put on and take off, and will not entangle your hair. It is specially designed to keep long hair comfortably. 4The swimming cap has a durable and elastic design that provides a comfortable feeling. Nonslip design, easy to pick and place. Professional quality materials are suitable for every swimming enthusiast. 5It can protect your hair and ears excellently while swimming. Bright colors help make it easier to spot the wearer when swimming in a pool or open water.