Ergonomic Ear Pockets Designed Extra room allowed for the ears provide a comfortable fit, also prevent overpressure and protect ears from Chlorine, sand and bacteria in the water. Comfortable fit Ergonomic 3D shaping helps create a perfect fit, strategic cushioned under ear contact points prevent pressure build up, while the material is designed not to snag or pull hair. Advanced thicker curved edges designed for a better fit and keep the cap stay in place on long swims. Size for All swimming cap is designed for unisex use. Durable and elastic surface make it suitable for long or short hair, long or curly hair. Good Elasticity & No Deformation Featuring great elasticity can be stretched easily and not deformation after stretching. Fit for hair styles of all length, such as long hair, shoulder length, thick hair or short hair. Since the swim cap is made of silicone, it may be easy to adhibit dust or other impurities, so please clean it before using.