Seven 7 iDP Project 23 ABS Full Face Helmet - L - Sand - Black PDP|Option They are designed to be

They are designed to be used with Presta valves

Upper materials: Mesh/TPU/synthetic leather upper provides great durability

Don't take chances with their most precious asset - their brain

Due to variances in manufacture there may be a slight difference in tone from one protector to another

Seven 7 iDP Project 23 ABS Full Face Helmet - L - Sand - Black PDP|Option They are designed to beLightweight, superior air flow full face protection for taking on the clock or just days in the park. Whether youre racing, getting laps at the bike park or hitting your local trails the Project 23 ABS will keep you protected and comfortable. The ABS shell offers shock absorbency and incredible value for money while the 23 big bore vents for no compromise airflow will keep you cool. Developed at 7iDP's Prolab facility on Vancouver Island, the Project