Certifications: CE / EN 1078,. Wing 57 is the outcome of an intensive, concentrated engineering and aerodynamics research project. This helmet is a combination of innovative technological concepts, breathtaking aerodynamics and distinctive design language.. Dorsal ridge, vortex killer system, removable aerodynamic tail and vents, magnetic visor make Wing 57 the best choice in terms of aerodynamics, performance and comfort.. 6 vents flow through ventilation. Fastex system closure buckle. Free padd interchangeable comfort padding. RSR 8 + adjustable retention system. Rudy lock buckle. Gender: Unisex. Weight: 320g. Dimension: S-M (54-58cm) - L (59-61cm)