While a few mild soaps don't harm lenses

51 inches (13mm)

Lens width about 1 3/4 inches (45mm)

39 inches (approx

6 Pack Frameless Bifocal Sunglasses Reading Glasses SGWK4 Color:6 Pairs Mix While a few mild soapsMetal frame with spring hinges Frame width about 5 1 2 inches (140mm) Lens width about 2 7 16 inches (62mm) Lens height about 1 1 2 inches (38mm) Bridge(DBL) about 5 8 inches (16mm) Temple length about 5 1 8 inches (130mm) EYEKEEPER BIFOCAL SUNGLASSES A crescent shape on the bottom part of the lenses have magnification, which is for reading and close up work. And the other parts of the lenses have no magnification,which is for distance viewing.