The screwless hinges guarantee the hinge's firmness

Head size: Medium to wider

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

[EYEKEEPER CLIP-ON POLARIZED LENS SYSTEM] - The clip-on design quickly converts compatible readers into sunglasses whenever needed

smartphone

Stylish Chic Oval Blue Light Computer Reading Glasses 1-CG071 Color:Blue The screwless hinges guarantee thePROTECT YOUR EYES Anti glare lens coating prevents insomnia and macular degeneration. Low blue light glasses provide computer eye strain relief & alleviate dry eyes & relief headache when using your T. V., smartphone, tablet or PC gamer equipment. BLOCKING OVER 30% BLUE LIGHT Blue light blocking technology naturally blocks out the recommended 30% of blue light rays: do not settle. Protect your eyes with the best blue light blocking glasses money can