Lightweight and durable, these sunglasses feature impact-resistant polycarbonate lenses that are polarized to reduce glare from water and other reflective surfaces. They also block both UVA and UVB light. Frames are flexible Grilamid TR90 polymer with rubber end tips for added comfort and to reduce frame slippage while active. Black frames have brown polarized lenses with red reflective coating; Tortoise frames have gray polarized lenses with blue reflective coating; Navy frames have gray polarized 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 NOTE: The product image(s) above may display our new logo. When you receive your item, it might feature either our new or old logo.