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The front lenses of Minima are made from optic glass, welded during the moulding phases to a clear mounting made from special thermoplastic, which is then welded to the colored polycarbonate frame. These lenses are 3/10 of a millimeter thicker than the traditional mask lenses so they can undergo a super-resistant tempering process. If the glass accidentally breaks, it will not shatter into tiny pieces that are dangerous to the eye, but will collapse, remaining whole, very similar to the windscreen of a car.