Alpina e helm deluxe cycling helmet mens this alpina e helm deluxe cycling helmet uses a number of advanced technologies to offer a practical and stylish item it features a polycarbonate outer shell bonded to an expanded polystyrene inner shell to provide a lightweight and sturdy frame using in mold technology there is a also a slide in visor multi step clip ventilation holes front mesh panelling to keep insects out an adjustable rear band for a customisable fit reflective details and a