Costa's 580 Polycarbonate provides high clarity, impact- and scratch-resistance along with lightweight all day wear-ability. Gray Polarized is a great everyday choice for activities on water and land. Costa's Monel is a super tough, corrosion-resistant alloy that provides a different look and feel. Costa case and cleaning cloth included to keep your Costa's safe while you are getting after it If your Costa eyewear has a defect in materials or workmanship, Costa will fix or replace them to get you back on the water. Refer to Costa's Limited Warranties for detailed information.