Costa Remora 580P Polarized Sunglasses Costa's Remoras are named after a small fish that hitchhikes on some of the most voracious sharks in the ocean. TheRemora sunglasses are a medium-sized, lightweight frame with a Hydrolite grip that wont slip. Integral pin hinge provides assisted action when opening and closing the temple, and 100% polarized 580 lenses give you the ability to clearly see whats out there.