Key features: Frame made of cellulose acetate. Square frame. Wave-shaped frame visible through the temple. 7-point metal hinge. Offers great resistance to handling. For the best visual comfort, we recommend this frame for prescriptions up to +/-3. Lenses Include: Lenses certified ISO, IAF, and KAB MC 04. Lenses prepared, cut, and hand-checked in our workshop. Customizable prescription lenses: online and in-store for single vision corrections, in-store for our progressive lenses. Free blue light filter option.