Like all other models in the collection, the Hunter helmet has the distinctive features that set KASK apart from any other riding helmet on the market. The molded ABS outer shell is very resistant and light and the comfortable and breathable inner padding is made with 100% Merino Wool: a natural antibacterial fiber that provides unique levels of breathability and thermoregulation. The inner shell is made of expanded polystyrene and has three levels of densities to guarantee total protection against impacts. With two honeycomb-shaped ventilation vents integrated into the polystyrene, an intelligent ventilation system in the helmet provides large volumes of cooling airflow, adding additional comfort to the rider. KASK helmets feature KASK's patented self-adaptive fit system in carbon look. First introduced to the equestrian market, the FIT system allows the helmet to perfectly and automatically fit the rider's head by gently cradling the back of the head. Weight: 565g The size of KASK helmets corresponds to the circumference of your head at the height of the forehead, in cm.