Elastic closure Hand Wash Only Outdoor design: the lightweight neck protection helmet liner is designed to keep the heat and sun off your neck and ears; The material is soft and flexible, designed to keep you cool and comfortable Sweat absorption: helmet liner with sun shade is easy to wear, this cap is made to absorb sweat and cover your neck from the sun, keep the sweat out of your eyes and provides sufficient helmet shade covers from the heat Soft and breathable: the elastic helmet neck protectors are made of silk ice fabric, safe and durable, soft and breathable to wear, friendly to your skin and drapes around the back of your neck and ears; It is common for people soak it in water for added cooling effect while others put it on their head.