- Material: This bicycle helmet cover is waterproof, tear resistant, and breathable. Made from 190T waterproof polyester, it ensures long time use - Elastic Edge: The helmet cover features an elastic edge design that makes it suitable for most cycling helmets. With a circumference of 80cm/31.50inch, it can easily fit over your helmet - Effective Protection: It effectively protects your helmet from wind, rain, dust and other elements. Ideal for cycling and outdoor sports - Reflective Design: The cover has reflective details on the front and sides to enhance your visibility while cycling. This feature makes you more noticeable in low light conditions - Versatile Use: Not only is this cover great for protecting your helmet during outdoor activities but it can also be used as a shower cap when needed Size Chart: 80cm/31.50inch Package Includes: 1 Bicycle Helmet Rain Cover Note: Please allow slightly errors 1-2cm differences due to manual measurement.