MT helmet Atom SV W17. To have effective ventilation, it is imperative that the air actually enters the hull. MT HELMETS uses high-tech air permeable fabrics inside the high-end helmet. The materials used for the interiors of helmets are made with flame retardant fibers to ensure optimum safety. It has Anti-Scratch Screen In Optical Polycarbonate: The flexibility and resistance of polycarbonate guarantees optimum safety and the optical factor allows higher levels of light transmission. The anti-fog treatment ensures a clean and safe vision. color: Orange (M, L, XXL) Red (M, L, XL) Blue/White (M, L, XL)