The 51 × 29 mm lenses provide broad coverage while maintaining a lightweight feel for extended outdoor wear

Block 90% blue light

Temple length about 5 7/16 inches (135mm)

Lens height about 1 3/8 inches (34mm)

Lens width about 1 15/16 inches (49mm)

Polycarbonate Lens Pilot Bifocal Reading Glasses SG1502 Magnification Strength:+2.50 The 51 × 29 mmPolycarbonate lens, metal frame with spring hinges Frame width about 5 7 16 (138mm) Lens width about 2 1 4 inches (54mm) Lens height about 1 9 16 inches (40mm) Bridge (DBL) about 5 8 inches (15mm) 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