Bang bang, the Highway 21 9mm Helmet is packin some heat with old-school minimalist styling and quality materials. The Coolmax liner is designed to keep your dome cool and a lightweight ABS shell will keep you comfy. Equipped with a fully removable and washable interior, Highway 21's just making sure you're not causin a stink. The 9mm helmet is sure to be your favorite go to, just clip it and rip it!