The Fibreglass helmet models have a net weight of 1050 grams. They are manufactured with a fibreglass shell and a triple density EPS interior. They come in three different shell and EPS sizes (XS & S. M & L and XL) and are certified according to the European standard ECE 22-06. The helmets interior is fully removable and made with foam of varying densities covered with hypoallergenic Coolmax® fabric for perfect comfort.They feature four air vents (two at the front and two on top) and 2 rear exhaust vents along with a micrometric security closure. The visor is removable without screws making assembly and disassembly easy.