FRAME FEATURES: RB4396 Warren sunglasses feature a rectangular, transparent brown frame and dark brown lenses. Made with sustainable bio-based acetate. SUSTAINABILITY: This Bio-Acetate frame is made with 65% bio-based materials, derived from renewable sources such as cotton, wood pulp, cereals, beet and sugar cane. 100% UV PROTECTION: To protect your eyes from harmful UV rays, these Ray-Ban sunglasses include lenses that are coated with 100% UV protection. CASE & CLEANING CLOTH INCLUDED: Each pair of Ray-Ban sunglasses come with a cleaning cloth and case to clean and protect your sunglasses from scratches and damage.