Quality features of the decentralized filters:

The optical centre is decentralized from the geometrical axis for better vision.
The lens meets the Norm 1836:1998, Optical Class 1: "filters suitable for continual use". A common base 8 lenses glazed on a 15 ° wrap-around sunglasses frame does not comply with Class 1 Norms. Two centring taps indicate the correct axis for glazing.

Green-Grey 75% CE Category 3 (T 13-15%)                                      Grey 75% CE  Category 3 (T 15-17%)

especial Black - Black mirror CE Category 3 (T 10-12%)           

                                                                           Clear smoke- Clear mirror gradient CE Category 1 (T 65-70%) UV360        

Muticolor Flash  Category 2 (T 41%)