proSPORT Bifocal Glasses Tinted Mirrored Lens for Mens and Women. Sporty Wraparound Frame with Nearly Invisible Reader Line plastic frame Composite lens non-polarized Lens width: 67 millimeters SPORTY FULL WRAP FRAME - Sport square wrap around full frames are lightweight and very comfortable. The Renegade bifocal reading glasses are available with classic black, cool grey and tortoise shell brown frames. Fits medium to most large head sizes. Unisex style. OPTICALLY CORRECT READING LENS  Optically corrected lenses provide accurate reader magnification powers with no distortion. So, if you look at a straight line, the line will be straight. Lenses provide 100% UV protection and also scratch resistant. Available in the following powers: +1.00, +1.50, +2.00, +2.50 or +3.00. GREAT VALUE - proSPORT offer a convenient value set of 2 pairs at affordable discount price, so you have a pair always handy. Keep a pair in your car and other at your outside patio table. NEAR INVISIBLE BIFOCAL LINE: Everyone will need to wear bifocals at one point in their lives. But do you need the whole world to notice the unsightly bifocal lines? The magnified reading area is injection molded, which means you cant feel the line on the front of the lenses. The front of the lens is smooth, like nothing is there. So the bifocal line is nearly invisible. Its visible from the back of the lens, but not so much on the front of the lens. So, stay smoooooth! WHAT ARE BIFOCAL SUNGLASSES? Bifocal tinted glasses are sunglasses with single powered reading inserted ONLY on the lower portion of the lenses. Functional bifocal sun readers are perfect for outdoor reading, driving, outdoor sports and distance viewing. You do not need to switch bifocal glasses and sunglasses.