Coyote Eyewear BP-5 Rimless Polarized Reader Sunglasses BP-5 measures 67mm; large fit Sleek Rimless design this polarized lens delivers class 1 optics with the added benefit of bifocal / reading power Bifocal segment fully integrated to the back side of the lens making it unnoticeable to onlookers Extremely Impact resistant lens - ANSI rated Z89.0 Gray tint offers natural color transmission and a cooling view