LENS: PHOTOCHROMIC CAT.0 -> 1 A spherical, mechanical, ventilated lens. A mirrored lens. PU + Photosensitive film A lens with no distortion Complete protection from UV rays FRAME: Frameless goggles A medium fit Extremely light VENTILATION: The A.V.S. Ariete ventilation system Open filters ELASTIC STRAP: Non-slip silicone A double buckle for quick adjustment 30 mm Height 3-LAYER FACE: A 3D thermoformed foam lining for unmatched comfort and feel The 1st layer is a technical closed-cell foam The 2nd layer is an extremely soft technical open-cell foam The third layer is hypo-allergenic in contact with the skin