ANSI Z.87.1 SAFETY LENSES – These bifocal glasses are ANSI Z87.1 safety rated which means you can wear them for work which requires safety rated glasss. Lens are impact resistant polycarbonate that is unbreakable and durable. Have you tried to break a CD (compact disc) before? It can’t be done! CDs are made of polycarbonate.
180 WRAP PROTECTION WITH POLYCARBONATE LENSES: Blocks UV rays, wind and debris from all angles. Wrap lenses also filter out UV rays that bounce off the inside of your lenses if the sun is behind you. Wrap sunglasses keep your eyes comfortable and safe. Great for cycling, runniig, motorcycle and convertibles.
CHOOSE THE CORRECT POWER: If you are a x.25 power (like a +1.25, +1.75 or +2.25), it is recommended to round up to the next .25 power For example, if you need a +1.25, +1.50 would be best.