plastic frame with unique flexible spring hinges

Frame width about 5 15/16 inches (150mm)

Frame width about 5 3/16 inches (132mm)

which is for reading and close-up work

4 Pack Vintage Bifocal Sunglasses Reading Glasses SBR2104 Magnification Strength:+1.00 plastic frame with unique flexiblePlastic frame with spring hinges Frame width about 5 3 8 inches (136mm) Lens width about 1 7 8 inches (48mm) Lens height about 1 9 16 inches (39mm) Bridge(DBL) about 3 8 inches (10mm) Temple length about 5 1 2 inches (140mm) 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.