The fit is comfortable and secure thanks to our adjustable Roc Loc 5.5 Mips system that combines fit and positioning adjustments while integrating with Mips technology for an added measure of protection in the event of an angled impact. The outer Hardbody shell extends to the inside of the helmet, and is molded from a tough polycarbonate that's fused permanently to the EPS foam liner using our In-Mold process to enhance durability and ventilation without excess bulk. FEATURES: Giro's extended road-and-beyond helmet boosts coverage Integrated MIPS system reduces forces from rotational impacts Hard shell with in-mold EPS helps absorb energy from crashes Extended coverage increases protection area CoolFit anti-odor padding helps you stay fresh on the ride 32 Wind Tunnel vents usher cool air towards your scalp Roc Loc 5.5 fit system lets you cinch in for the perfect fit SPECS: Construction: Full-wrap In-Mold polycarbonate shell with EPS liner Ventilation: 32 Wind Tunnel vents with internal channeling Fit System: Roc Loc 5 Mips® Product Weight: 300g (size Medium CPSC)|280g (size Medium CE)  Certification: Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older, E.U.: CE EN1078 Highlights: Coolfit™ anti-microbial padding, Featherweight webbing with Slimline™ Buckle