Ray-Ban Warren Bio-Based is a modern version of the iconic frame style. This model features a rectangle shape and is crafted from acetate, with a transparent green finish on the front and temples, and brown lenses for added depth. These sunglasses offer you 100% UV protection so you can enjoy your day in style and comfort. PRODUCT INFORMATION STYLE Warren Bio-Based MODEL CODE RB4396 6681/3 57-20 FRAME DETAILS COLOR Transparent Green MATERIAL Injected SHAPE Rectangle LENS DETAILS COLOR Brown MATERIAL Polyamide Bio TECHNOLOGY Solid Color LENS CATEGORY 3N