Low blue light glasses provide computer eye strain relief & alleviate dry eyes & relief headache when using your T

20% color distortion due to 30% blue color was filtered out

Temple length about 5 1/2 inches(139mm)

Frame width about 5 5/16 inches (135mm)

Bridge (DBL) about 1/2 inches (13mm)

6 Pack Lightweight Rimless Bifocal Reading Sunglasses SGWK2 feed-color-Red/Green/Brown Low blue light glasses provideMetal frame with spring hinges Frame width about 51 2 inches (140mm) Lens width about 23 8 inches (61mm) Lens height about 15 16 inches (34mm) Bridge(DBL) about 9 16 inches (15mm) Temple length about 51 8 inches (130mm) 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.