Venture out into the great unknown with the Costa Womenâs Mayfly Mirror Square Sunglasses. The injected bio-resin frame offers comfortable wear, while the polarized lenses help defend against glare. The UVA and UVB protection shields against harmful UV rays, and the scratch- and water-resistant coating ensures lasting use. Costa Del Mar Costa Womenâs Mayfly Mirror Square Sunglasses Black/Blue - Case Sunglasses at Academy Sports