Experience the dependable design of Mainsail XL sunglasses. These square-shaped shades offer a standard fit that is ideal for daily use. The frame is crafted in injected bio-resin, while the lenses ensure your eyes are well-protected from harmful UV rays. Costa Del Mar sunglasses sold by authorized sellers like Amazon are eligible for all manufacturer warranties. Included is a microbag and cleaning cloth. Click on the Costa Del Mar link above the product title to shop the entire assortment.