The Maui Jim Lagoon 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 feature Maui Jim"s patented PolarizedPlus®2 technology, block 100%UV (ABC,) and are simply a joy to look through.