The glare-reducing, contrast-enhancing polarized polycarbonate lenses make these sunglasses ideal for use around water and other high-glare environments. Durable, injection-molded Grilamid TR90 plastic lens frame combine with metal bows that have extended pads on the end tips for greater comfort. UVA and UVB protection. Black frames have gray tint lenses; Tortoise frames have 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