RB4378 Sunglasses in Black and Grey Gradient - RB4378 | Ray 。Classic Ray-Ban RB4378 frames in black with dark lenses. These are being sold mainly for the frames, as the current lenses are prescription and should be replaced to fit your needs. Stylish lightweight design with a modern square shape that works great for everyday wear. Model: RB4378 Color Code: 601/8G Size: 54□16 145 Color: Black Frames Condition: Pre-owned, frames are in very good condition with light normal wear. Lenses should be replaced due to prescription. Perfect for bringing to your optometrist for new prescription lenses or sunglasses lenses. Includes frame only unless otherwise noted.