Bridge (DBL) about 11/16 inches (18mm)

and then wait for your customized blue light blocking specs shipped

block more than 99% within 400nm-410nm

Plastic frame with spring hinges

[READERS & OUTDOOR CHALLENGES] - If you wear readers

Stylish Thicker Frame Bifocal Reading Sunglasses SBR9110 Bifocal Sunglasses Men Bridge (DBL) about 11/16 inchesPlastic frame with spring hinges Frame width about 5 7 16 (138mm) Lens width about 1 7 8 inches (48mm) Lens height about 1 5 8 inches (41mm) Bridge(DBL) about 9 16 inches (14mm) Temple length about 5 7 16 inches (138mm) 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. UV400