The lens is really great and the design format also. It sits great against your head and is very light in weight. The PRIZM lens is awesome. But...the frame is a semi transparant and this reflects the light around your eyes in a annoying way. I have already a turbine rotor and swapped these lenses and side trim on to my old black frame. If i did not had my old turbine rotor black frame i would have sent the sunglasses back because of this light refraction you have around your eyes from the semi transparant frame this one is. I think you should buy a turbine rotor with PRIZM lenses which does not have a semi transparant frame for that reason.