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 helmetƒ??s 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.