Rudy Project Rebel Carbon - Lightweight and Technical Cycling Helmet The Rudy Project Rebel helmet combines carbon-kevlar for maximum resistance and lightness. With advanced ventilation, RSR11S adjust more→ment, and Fidlock magnetic closure, it is ideal for road, gravel, and MTB. Helmet type: Road / Gravel / MTB Aerodynamics: High, with optimized design Ventilation system: 22 holes + 6 internal channels Safety technology: CE EN 1078 certification + RP rotational impact test Weight: 250 g Materials: Carbon-Kevlar, interior microfiber, recycled components