Diff Eyewear | Accessories | Diff Eyewear Finn Sea Tortoise 。Why we love this: let\'s face it, we spend a lot of time on our digital devices. These glasses block out blue light, helping prevent blurry vision, reduce risk of headaches, and improve sleep. •Materials: composed of injection plastic, stainless steel, or a combination of both with AC bluelight lens technology; molded with acrylic lens •Dimensions: 48mm Lens Width x 21mm Bridge x 145mm Temple Length •Care Instructions: Best not to expose it to heat for long periods of time. It is best to keep in the protective case when not in use. •Includes: a soft pouch and a cleaning cloth