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Protection Category 3
These lenses are perfect in all light conditions, they protect the eye against UV rays up to 400 nm (UV400), much more above the standard. The chromatic tonality with a degrading effect is given with the addition of ultra thin layers of fluorides and metal oxides. Maximum protection against reflected light obtained by multi-layer anti-glare and the better color and contrast improvement, due to the presence of some natural minerals - the rare earth elements melted to the glass (ACE) - make the NAT 37 ACE an exclusive lens.
