Temple length:13

The frame for the most comfortable fit available today in addition to unparalleled durability

never contact with acid

While a few mild soaps don't harm lenses

Frame height about 1 3/8 inches (34mm)

4 Pack Rectangle Bifocal Reading Sunglasses SBR2109 flip up sunglasses Temple length:13Plastic frame with spring hinges Frame width about 5 5 16 inches (135mm) Lens width about 1 7 8 inches (47mm) Lens height about 1 7 16 inches (36mm) Bridge (DBL) about 1 2 inches (12mm) Temple length about 5 5 16 inches (135mm) 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.