POC Corpora Helmet City-Optimized Protection When it comes to commuting through urban environments, not all helmets are created equal. The POC Corpora Helmet brings POC's famous protection to the world of commuter helmets. The outer shell is crafted from durable ABS to handle the daily bumps and rigors of regular use while commuting, without compromising the safety and integrity of the protective inner EPS liner. Directional ventilation channels guide air over the head to keep you cool while riding, even at slower speeds, while small holes at the top of the helmet allow hot air to escape. A dial adjustment at the rear of the helmet can be used with one hand for quick adjustments and reflective detailing keeps you visible in low light conditions. Features Durable ABS outer shell preserves the helmet during the rigors of commuting, without compromising protection in the case of a crash Protective EPS inner liner absorbs impact forces Ventilation channels direct airflow over the head, while small holes at the top of the helmet allow hot air to escape Reflective details improve low light visibility while in traffic SPECIFICATIONSCore Material EPSClosure system Buckle Intended Use Urban, Commuter, City Weight N/ASizing Size Small Medium Large Head Circumference (cm)51 - 54cm54 - 59cm56 - 61cm | Poc | Corpora Helmet Men's | Size Small In Uranium Black Matte