The Giro Agilis is the right choice for riders looking for a helmet that combines an airy design with slightly deeper coverage and a host of performance features aimed at road and multi-surface riding.The fit is comfortable and secure thanks to our adjustable Roc Loc 5 system that combines fit and positioning adjustments. 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.Key Features:Coolfit Anti-Microbial paddingFeatherweight webbing withSlimline™ buckleConstruction: Full-wrap In-Mold polycarbonate shell with EPS linerFit System: Roc Loc® 5Ventilation: 32 Wind Tunnel™ vents with internal channellingSizes:S 20”–21.75” / 51–55cm M 21.75”–23.25” / 55–59cm L 23.25”–24.75” / 59–63cm