Mammut Skywalker 3.0 Helmet Alpine Calamit One Size. The hybrid construction uses a cutting-edge combination of an EPP and EPS inner shell in a robust hard shell. Foam padding over the entire inner surface offers reliable protection from impact even on the side front and rear. The fine-tuned design includes features like matte surfacing on the outer shell large ventilation openings and easy one-handed size adjustment. The helmet sits compactly and has additional inner cushioning to better cater to the unique size and shape of your head. Durable robust and easy to pack with stowable straps the Skywalker 3.0 offers protection and comfort with no compromises on performance. Its recycled EPS foam gives it a sustainable edge. Specifications for Mammut Skywalker 3.0 Helmet: Manufacturer: Mammut Size: One Size Gender: Unisex Color: Alpine Calamit Package Contents: Mammut Skywalker 3.0 Helmet Mammut 2030-00300-6433-1: Skywalker 3.0 Helmet Alpine Calamit One Size