Ray-Ban's RB4427 Kat sunglasses are a bold, bio-based acetate design with a wide silhouette and thick temples. The 60s-inspired rectangular frame is engraved with the iconic Ray-Ban logo, offering an authentic touch to this bold profile. 100% UV protection Solid lenses Acetate Made in Italy SIZE 49mm lens width 20mm bridge width 145mm temple length. Soft Accessories - Sunglasses > Ray-ban > Saks Fifth Avenue > Barneys. Ray-Ban. Color: White Grey Gradient.