Composite framenon-polarizedLens width: 60 millimetersGRILAMID NYLON SUPER DURABLE THERMOPLASTIC FRAMES ? The PUMA proSPORT Bi focal sunglasses are made of Grilamid Nylon, an extremely tough material that offers extreme stress and crack resistance; flexibility, and an incredibly smooth finish. These reader glasses for men & women are also extremely heat resistant, so they won’t melt, warp or get sticky under sweltering sun while on golf course. Motorcycle bifocals and cycling bifocals should retain their shape to stay on your head.ANSI Z.87.1 SAFETY RATED LENSES ? When buying cheater sunglasses men and women, proper eye protection is key. These sunglass bifocal readers are constructed of safety rated ANSI Z87.1 impact resistant polycarbonate that is virtually unbreakable and extremely scratch resistant. Have you tried to break a CD (compact disc) before? It can??t be done! CDs are made of polycarbonate. These magnification sunglasses are can be used when safety glasses are required.180 WRAP & 100% UV PROTECTION: To block UV rays, wind & debris from all angles, you need bifocal sport sunglasses with cheaters w/ 180 degree protection. If the sun is behind you, flat lenses allow rays to bounce off the backside of the lenses into your eyes. Flat lenses don??t seal out wind & dust causing dry eyes. PUMA sunglasses with readers have UV400 protection to block 100% UVA UVB & UVC rays which cause cataracts & corneal sunburn. Try readers bifocals for Golf Driving Fishing & Cycling.WHAT ARE BIFOCALS? Sunglass with Cheaters have a distinct magnified area at the bottom 1/3 of the lens separated by a line. The top area has zero magnification. Small objects are magnified when looking through the bottom of the lens. When looking straight ahead, your vision is normal. Available in sunglass magnifier powers: +1.50, +2.00, +2.50, +3.00. If you are a x.25 power (like +1.25 or +1.75), ROUND UP to the next .25 power. For example, if you need a +1.25, +1.50 would be best.NEAR INVISIBLE BIFOCAL LINE: Everyone will wear bifocal sunglasses or magnifier sunglasses eventually. But should every one notice those bifocal lines? The magnified reading area on our lenses are injection molded, so you can??t feel the line on the front of the lenses. The lens is smooth, like nothing is there and nearly invisible on the front of the lens. Sunglasses for men readers & women should look modern and clean.