Costa Blackout/Blue Mirror Hinano 580 Sunglasses Case included Lenses are prescription ready (rx-able) Costa's most high tech lens - 580 Glass provides superior clarity, scratch-proof, 100% UV protection and the best polarizing efficiency available. Blue Mirror Polarized is best for bright, full-sun situations on the open water and offshore. Costa's co-injected bio-based nylon frame material is both tough and durable, while offering a comfortable fit. Comfortable S fit. Built by hand and backed for life. Every pair of Costa Sunglasses includes a limited lifetime warranty.