Developed through years of in-house testing by our own R&D Division combined with insight from "The World's Fastest Racers." Engineered exclusively for the unique demands of high-speed racing. Constructed of precision laid aerospace carbon fiber/kevlar composite shell. Flow through ventilation with four intake ports working together to provide maximum cool air transfer. Completely interchangeable, MX style padded liner and D-ring strapping system provide a plush, custom fit. Performance and aerodynamics that make for the most technically advanced helmet in Bicycle racing. Complete with Moto ACE Visor, custom storage bag, fit kit, and owners manual. Weighs in at only 31 ounces Meets or Exceeds safety approval ratings from CSPC, ASTM, and CE requirements.