Moolecole Soft Waterproof Silicone Swim Cap Girls Summer Pool Sea Swimming Cap Bathing Haircare Hat Long Hair Material: Eco-friendly silicone Size: one size fits more, suitable for most girls and boys. Waterproof - keeps long hair, thick and short hair dry and protects from contaminated water. Designed with extra volume specifically for long hair, special hair and ear protection design, comfortable long wear. Eco-friendly & Non-toxic. Designed specifically to be human safe. Premium soft Silicone for maximum stretch and durability.