The Protone weighs just 215g and uses a 3D Dry padding with a multi-layer open cell construction process to give a more comfortable ride. It has removable and washable inner padding, made from CoolMax fabrics. Chin pad with synthetic leather chinstrap. 3D DRY padding utilizes a multi-layer open cell construction process. Removable and washable inner padding in Coolmax material Incredibly aerodynamic and top performing shell, tested in the wind-tunnel and able to provide a really impressive CX rate. Any position the head will assume the outflow of the air will be perfectly in line with the helmet. The MIT Technology, guarantees a higher head safety, with a complete polystyrene protection thanks to the polycarbonate layer that covers the shell on the top, on the base ring and on the back.