Costa Prop sunglasses are lightweight, comfortable, and perfect for anyone who loves life outdoors Full rim frame made from TR 90 Nylon; a strong yet lightweight material that is resistant to breakage. For men and women (unisex) Rounded rectangular shaped lenses will suit most face shapes Costa C logo prominently displayed on the temples Sturdy integral hinge Costa's state-of-the-art lens manufacturing processes put them in the top tier of specialty fishing sunglasses for both salt and fresh water. Costa sunglasses have hundreds of lens and frame combinations to perfectly suit any environment. Every pair of Costa's is made by hand and comes with a lifetime guarantee Come in a Costa protective carrying case with a cleaning cloth. 100% UV protection Available with prescription lenses here These sunglasses are available with a mirror coating option on certain colors. Mirror coatings are suitable for protection from intense light. A mirror coating reflects back light and reduces the amount of light passing through the lens. This makes it more comfortable for eyes in very sunny conditions.These sunglasses are available with polarized lenses on certain colors. Polarized lenses have a filter within the lens that blocks the wavelengths of light that cause glare. They can greatly enhance contrast and allow for greater depth of vision, especially in water. They are ideal for any situation where glare reduction is necessary, like driving or playing sports.