Accord with BS EN ISO 12312-1:2013 and EN1836:2005+A1:2007

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

Lens width about 1 5/8 inches (42mm)

plastic frame with spring hinges

TR90 Full Rim Bifocal Sunglasses Rectangle Reading Glasses SG904 Color:Red Accord with BS EN ISOPolycarbonate Lens, TR90 and rubber frame without spring hinges Frame width about 5 11 16 inches (145mm) Lens width about 2 3 8 inches (60mm) Lens height about 1 7 16 inches (37mm) Bridge (DBL) about 1 2 inches (13mm) Temple length about 4 15 16 inches (125mm) 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