The Shred Half Brain R is a great value for the skier or snowboarder looking for a simple look and protection on the mountain. Fixed Ventilation keeps a constant flow of air moving through the helmet to prevent you from overheating and keep you comfortable. The Hard Shell Construction is lightweight and loaded with impact absorption. Removable Ear Pads and a Brim allow you to look good and customize your style if you want to. Hard Shell Construction, Removable Ear Pads, Fixed Ventilation, SM-52-56cm, ML-57-61cm, Certifications: EN 1077B/ASTM F 2040, Warranty: One Year, Race: No, Category: Half Shell, Audio: Audio Compatible, Brim/Visor: Yes, Ventilation: Fixed, Adjustability: None, Year Round Capable: No, Shell Construction: Hard Shell, Model Year: 2017, Product ID: 545767, Model Number: DHEHBRG11S, GTIN: 8054615006638