A top choice of road, cyclocross and XC riders, the Giro Atmos II Road Helmet is the perfect blend of comfort, performance and sleek styling. In-Mold polycarbonate shell with EPS liner that allows for bigger vents, all while remaining incredibly lightweight. New Thermoformed SL Roll Cage, a polycarbonate skeleton fused throughout the helmet's EPS foam liner, gives structural support. 26 Wind Tunnel vents cool your entire head as it forces heat and stale air to the outside. Roc Loc 5 retention system puts unrivaled fit and adjustability at your fingertips, and is further enhanced by the Slimline webbing and ultra-light buckle.