Dirty dogs are equipped with the latest lens technology in polarized polyfilter and polycarbonate lenses polycarbonate is the most impact resistant optical material available guaranteeing the wearer protection from physical objects as well as visual comfort scientifically formulated to offer exceptional defence against the suns harmful rays our polarized polyfilter and polycarbonate lenses absorb radiation that can be damaging to the human eyethese lenses provide clear and restful vision in