FRAME FEATURES: RX7217 Chad eyeglass frames feature a rectangular, Havana frame 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. PRESCRIPTION READY EYEGLASS FRAMES: Ray-Ban eyeglass frames feature lenses that need to be replaced with prescription lenses so you can enjoy clear vision. CASE & CLEANING CLOTH INCLUDED: Each pair of Ray-Ban eyeglass frames come with a cleaning cloth and case to clean and protect your eyewear from scratches and damage.