Harrison Howard CareMaster fly mask features a strong, durable and lightweight nylon mesh eye guard which blocks 50% of the UV rays, protecting the eyes and nose from sunburn. It is ergonomically shaped to keep the eye guard away from the eyes and provide a close fit. Thoroughly padded with fleece to prevent rubbing. Large mesh covers over the ears allow movement while providing protection. Two large adjustable touch and close straps provide a secure and snug fit. Machine washable. The entire mask is made of air-streaming, lightweight and soft fabrics which create a pleasantly cool and dry comfort.