The Maui Jim Stingray combines a classic design with modern materials into a frame that is at home anywhere. The frame is made of Cellulose Propionate, which is a lightweight and hypoallergenic plastic, and has spring hinges for durability. The glass lenses use Maui Jims Patented PolarizedPlus2 technology, block 100%UV (ABC,) and are simply a joy to look through.Appeal: Unisex. Frame Shape: Rectangle, Wrap. Face Shape: Round, Oval. Lens Material: Polarized glass. Spring Hinge: Yes.