While a few mild soaps don't harm lenses

Lens width about 2  inches (50mm)

Lens width about 1 7/8 inches (48mm)

Lens height about 1 5/8 inches (42mm)

Pilot Style Bifocal Sunglasses SG804 Color:Brown While a few mild soapsAcrylic lens, metal frame with spring hinges Frame width about 5 1 2 (140mm) Lens width about 2 5 16 inches (58mm) Lens height about 1 7 8 inches (47mm) Bridge (DBL) about 1 2 inches (13mm) Temple length about 5 1 4 inches (133mm) 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.