This helmet rain cover is suitable for various bicycle helmets. It is a necessity for outdoor travel and daily life. Protect your helmet from rainwater and muddy water in rainy and snowy days. Waterproof material: the bicycle helmet rain cover is made of strong, tear-resistant nylon. The interior has a waterproof coating, effectively preventing rain and snow. Reflective Strips: With reflective strips on the rain cover, make you visible in dark night and keep you from accidental injury, effectively keep you safe. Adjustable buckle: Located in the middle of the back of the rain cover to prevent the rain cover from slipping. Elastic band: good elasticity, easy to wear with different types of helmets.