Costa Del Mar Brine Sunglasses are right at home in a saltwater environment and are equipped to enhance your vision in extreme fishing situations. Costa is an innovative eyewear brand that is made for fishermen by fishermen. Cold-injected nylon and Hydrolite frames grip the skin tighter when exposed to water or sweat. Frames are all hand-assembled Integral stainless steel hinges are durable and will protect eyes Variety of lens color options available Add prescription lenses here Anti-reflective coating available on lenses Oleophobic and hydrophobic coatings on the front of lenses repels water and natural skin oils Full Mirror Coating available on certain lenses which reflect back glare and UV rays from the sun. 100% UV protection 100% Polarization For Men Costa Del Mar Sunglasses include a Costa Del Mar protective carrying case and cleaning cloth.