100% UVA/ UVB Protection 6 Base Polycarbonate Lenses 6 Base Injected Frame Comes with Black Flys soft bag. Size 60 - 13 - 143 Transition Lenses are custom cut, and non-refundable. They do not get as dark as a real sunglass either. Black Flys nylon frames are injected of the highest quality nylon available and feature optical quality polycarbonate lenses.