Flex Combinations - The range of lens strength combinations are from 0 strength (plano) to 4

Frame width about 6 1/5 inches (155mm)

Plastic frame with spring hinges

[READERS & OUTDOOR CHALLENGES] - If you wear readers

Temple length about 5 5/16 inches(135mm)

Stylish Thicker Frame Bifocal Reading Sunglasses SBR9110 Bifocal Sunglasses Men Flex Combinations - The rangePlastic frame with spring hinges Frame width about 5 7 16 (138mm) Lens width about 1 7 8 inches (48mm) Lens height about 1 5 8 inches (41mm) Bridge(DBL) about 9 16 inches (14mm) Temple length about 5 7 16 inches (138mm) 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. UV400