The Helium helmet by ALK13 is cutting the edge of technology. It is made with a revolutionary technology called in mould: The space between the shell and the interior polystyrene limits the thickness of the helmet. Profiled design but above all it considerably restraints the weight, just 280 grs. It comes inside an individual carton box, with 2 thermoformed foams in different sizes S/M or L/XL.