Polycarbonate lenses, easy to work with, mould, mildew and Tarmo formar. It is a very light material, of low thickness (1.5 mm) and very sturdy construction. It has a tac coating which provides the polarised filter. This coating is made from cellulose Tri, acetate, the 100% of UV rays blocks 99% of glare light eliminated and the contrast of colour and visibility. They are lenses of the Catergory 3 - DH they allow between 9 -18% sunlight (Light Transmission). It also has a 3 mm Mirror layer, this requires a much better protection to use, because it has a barrier for the the impact the sun rays.
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