Giro Aerohead MIPS Helmet Matt White Size:M Three unique stretch woven fabrics developed BF Giant Three unique stretch woven fabrics developed for Pas Normal Studios merged for optimal body wrap SpecificationsDimensions S3 130 x 248 mm L3 145 x 248 mmRail Carbon +10mm Ø7x9 mmIntended use RoadFamily SLRSuperflow The Superflow technology drastically reduces all physical limitations caused by prolonged pressure in the perineal area It features an aerodynamically efficient profile INTEGRATED MIPS BRAIN PROTECTION SYSTEM All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards