Head size: Medium

Bridge(DBL) about 9/16 inch (15mm)

Plastic frame with spring hinges

Frame width about 5 11/16 inches (145mm)

4 Pack Double Color Frame Bifocal Reading Glasses BR2105 Magnification Strength:+2.50 Head size: MediumAcrylic lens, plastic frame with spring hinges Frame width about 5 1 2 inches (140mm) Lens width about 1 3 4 inches (44mm) Lens height about 1 7 16 inches (37mm) Bridge (DBL) about 1 2 inches (12mm) Temple length about 5 5 16 inches (135mm) EYEKEEPER BIFOCAL GLASSES 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