Frames are made from acetate and stainless steel. Acetate is a plant-based material derived from wood pulp and cotton, making it stronger and more durable than standard plasticPolarized lenses with UV400 protection are designed to block 99% of reflected light and 100% of UV lightCR-39 lenses are durable, scratch resistant, and provide maximum visibilityFeatures adjustable nose-pads that can be shaped to fit your faceShape: squareIncludes a protective hard case, a microfiber fabric pouch, and a cleaning clothOrigin: Shenzhen, China Avery Polarized Acetate Sunglasses