Lenses High quality, impact resistant blue light blocking lenses. Get additional protection from eye strain and more comfort while reading from digital screens. Blue light filtering lenses block up to 30% of potentially harmful high-energy light ( HEV ). HANDMADE FROM HIGH QUALITY MATERIALS Frame Hypoallergenic, lightweight and optical friendly. These sunglasses are made from highest quality polycarbonate, which means they are more comfortable and durable than most other sunglasses in the same price range. Size Frame Height: 55mm Frame Width: 145mm Medium Fit Packaging Complimentary case included.