Nike Swim Unisex Solid Long Hair Silicone Training Cap has extra space to allow people with long hair to feel comfortable and keep their hair well protected. It's made from hypoallergenic, high-stretch silicone material that stands up to regular use in chlorine.-EXTRA SPACE for long hair without compromising a secure fit-HYPOALLERGENIC, HIGH-STRETCH silicone material-DURABLE material stands up to regular use in chlorine