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. In-Mold Polycarbonate Shell reinforces the area around the vents and ribs, creating a one-piece exoskeleton, which allows the helmet to be lighter, more durable and better ventilated than traditional designs Roll Cage is a light-yet-tough web of reinforcement, invisibility molded inside the helmet’s EPS foam liner Thermoformed SL Roll Cage is a polycarbonate skeleton fused throughout the helmet’s EPS foam liner, which provides structural support 26 Wind Tunnel vents with internal channels thrust cool, fresh air over and around your head while forcing heat and stale air out Impact absorbing, antimicrobial X-Static padding offers unprecedented comfort and manages moisture Quite possibly the best-fitting retention system you’ve ever experienced, the Roc Loc 5 easily adjusts both fit tension and vertical position with a single hand, plus it’s 40% lighter than its popular predecessor, Roc Loc 4 Featherweight webbing, Slimline webbing retainer and custom ultra-light Slimline buckle are comfortable and lightweight Includes internal webbing attachment Certified CPSC