The Pescador Side Shield Polarized 580G Sunglasses feature Lightwave Glass lenses that are polarized to cut through glare and reflections. Costa constructed the frame from recycled fishing nets, so fishing in them just feels right. Side shields add coverage to reduce eye strain, and come off when you don't need them for a more casual look. The frames are designed to be fully recyclable, so when your Pescadors are finally ready for retirement it can be an honorable and guilt-free occasion. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.