High quality spherical lenses provide superb optical clarity. Meets ANZI high UV protection standards. Passed FDA inspection with impact resistance lenses. Anti-blue ray computer glasse can help with eyestrain caused by harmful blue ray emitted from digital screens. Resin lens,super lightweight can cut 90% harmful blue light ANTI BLUE LIGHT- Block blue light and relieve eye fatigue associated with digital screens BETTER SLEEP- Blue light reduces melatonin production which makes you sleepy. Less blue light = deeper sleep Standard Adult Shape Glasses. Measurement - 135mm frame width, 52mm lens width, 33mm lens height, 18mm bridge. Non Spring Hinge Design Package contains 2 glasses and 2 microfiber cleaning/storage pouches.