Futuristic frame design combined with a comfortable fit and genius lens changing system.Special 3 step temple length adjustment system.Block system prevents the temple tips damage the lenses while folded inwards.Lock system prevents the temple to fold in easily while not wearing the glasses. That makes these sport glasses always ready for use.Polycarbonate photochromic lenses. These lenses have a light transmission of 85-17%. The brighter the light, the darker the lens automatically becomes. One lens provides you with category 1, 2 and 3 levels of eye protection.Interchangeable polycarbonate lenses with special air flow system and anti-fog coating on the inside of the lens which ensures better performance in humid weather conditions.High-end Grilamid frame with adjustable rubber nose piece.Weight (gr): 32.Height x width x length (mm): 54 x 153 x 158.