Material: Silicone, soft, waterproof and non-toxic. Universal Adaptable Design: Swimming cap for adults, designed for men and women, its structure allows full and adequate adaptation to long or curly hair. Ideal for the pool and the sea, triathlon, water polo, water aerobics, synchronized swimming, etc. Purpose: the use of swimming caps for long hair helps to maintain your hair mostly dry. you can adjust by venting the air from the cup to get a perfect seal. Widely Used: The non-slip waterproof swimming cap with earmuffs for unisex long and short hair has excellent elasticity which is suitable for women, girls and women with thick, curly, short and long hair, the swimming caps can help you reduce the swimming resistance, bright colors help the swimmer to find their way more easily when swimming in the pool or in the open sea.