If you stare at a screen all day (phone, computer, etc.,) these frames are for you. They help reduce the effects of the solar blue light that comes from all your devices. As a bonus, they're super stylish, with retro styling in classic, go-with-anything black. The lenses are clear, meaning no prescription required. Non-prescription lenses Solar blue light reducing 5W x 2H in. 12.70W x 5.08H cm. Material: Plastic, Metal Style Number: 87665