Whether you're riding on urban roads or mountain trails, the Giro Syntax MIPS® helmet combines European style and high performance for long-term comfort and enhanced protection against angular impacts. The Roc Loc™ 5 Air MIPS adjustment system allows you to customize the fit and feel for maximum stability, while the durable polycarbonate shell and EPS foam liner offer optimal durability and ventilation. The 25 wind tunnel vents channel air to keep your head cool, while the anti-microbial IONIC+™ padding and featherweight strap with Slimline™ buckle add even more comfort and convenience. Fully molded polycarbonate shell with EPS liner Four polycarbonate hard bodies 25 wind tunnel vents with internal channeling Roc Loc® 5 Air MIPS Complies with CPSC safety standards for bicycle helmets for persons age 5 and older EU: CE EN1078 Anti-microbial IONIC+™ padding Featherweight strap with Slimline™ buckle Weight: 340g (CPSC medium size) | 280g (CE medium size) Giro Syntax Mips - Road bike helmet