The Agilis™ is the right choice for riders looking for a helmet that combines 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 Giro\\\'s adjustable Roc Loc® 5 system that combines fit and positioning adjustments. The outer Hardbody™ shell extends to the inside of the helmet and is moulded from a tough polycarbonate that\\\'s fused permanently to the EPS foam liner using Giro\\\'s In-Mold™ process to enhance durability and ventilation without excess bulk. Key FeaturesFull-wrap In-Mold polycarbonate shell with EPS liner ensures continuous protection without being bulky or heavy Adjustable P.O.V.™ visor helps shield your eyes from the rain or sun 32 Wind Tunnel™ vents for a cool and comfortable wearing experience Cool-fit anti-microbial padding for added comfort and hygiene The Giro Story - WE\\\'LL STOP WHEN YOU STOPYou, doing things that most people wouldn\\\'t even consider. Drawing a line that\\\'s rarely inbounds. Descending at speeds that would give your underwriter pause. Pushing yourself in ways nature and gravity never intended. As long as you\\\'re relentlessly pushing forward, we will too. When you stop, that\\\'s when we\\\'ll stop. We\\\'re obsessing over your passion. Destroying more helmets in testing and development than some brands even create. We\\\'re agonizing over vent sizes and inseam lengths. Pouring our years, our hearts, our sweat, into one insole, one goggle, one helmet at a time. Plainly said, being there when you need us most. Giro Helmet SizingSMLXLHead Circumference (CM)51-55cm55-59cm59-63cm61-65cm Helmets Buying Guide