FRAME FEATURES: RB4395F Kiliane Low Bridge Fit sunglasses feature a square, black frame and dark grey lenses. Made with sustainable bio-based acetate. Low Bridge Fit frames are designed for those with high cheekbones and lower nose bridges. 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.