With glare-reducing, contrast-enhancing polarized polycarbonate lenses and a lightweight frame of flexible, durable Grilamid TR90 injection-molded plastic, these sunglasses perform well in any environment. UVA and UVB protection. Black frame has smoke tint lenses; Tortoise frame has brown tint lenses.California residents, read the Proposition 65 warning California Proposition 65 Warning California's Proposition 65 requires us to warn our customers if a product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm if exposure to those chemicals is above set limits. For this product, we provide the following warning: WARNING: This product can expose you to chemicals including Bisphenol-A (BPA) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov