100% Polarized Glass Lenses! 100% UV Protection! The Costa Blackfin sunglasses are ready for larger-than-life adventures. The Costa Del Mar sunglasses will easily deflate those glaring rays as you aim for and reel in the big catch. They have 100% UV protection and the lenses are 580G for superior quality. These sunglasses are made with patented technology that blocks light for better clarity. These stylish glasses can be used for everyday as well.