Costa's most high tech lens - 580 Glass provides superior clarity, ultra scratch-resistant, 100% UV protection and the best polarizing efficiency available. Gray Polarized is a great everyday choice for activities on water and land. Costa's Acetate frame material made from tree pulp is best for when you're not being active. Naturally hypoallergenic and can be adjusted for the best fit with a warm, luxurious feel with rich color layering and unique patterns. 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.