This race-inspired design is known for its great fit & great value. With similar features to the S-Works&8212;like the Pro Fit 360 fit system & 4th Dimension Cooling&8212;the Propero handles even the most intense efforts on the pavement. Complies with one or more of the following safety standards for bicycle helmets: CPSC SNELL B90A CE & AS/NZS 4th Dimension Cooling System with Mouthport Slimmed down Pro Fit 360 retention system borrowed from the S-Works is secure & easy to adjust on the fly Wind tunnel tested for maximum cooling Composite matrix internal reinforcement allows larger vents for greater cooling Soft Dry Lite webbing material wont stretch out with sweat or water Light & simple U-Turn strap adjusters Patented clip-on matching color visor included