Frames are made from acetate, a plant-based material derived from wood pulp and cotton, making it stronger and more durable than standard plasticBlue light blocking lenses help block potentially harmful blue light at a 29.6% filtration rate.UV400 protection are designed to block 100% of UV lightCR-39 lenses are durable, scratch resistant, and provide maximum visibilityShape: squareIncludes a protective hard case, a microfiber fabric pouch, and a cleaning clothOrigin: Shenzhen, China Walker Acetate Blue Light Glasses