The Ray-Ban RB4457D Bio-Based sunglasses channel a distinct '90s-inspired energy with a clean rectangle shape that adds sleek definition. Crafted from lightweight nylon and propionate, the full-rim frames in black are both stylish and durable. The sunglasses' low bridge fit ensures all-day comfort, while classic grey lenses complete the timeless look. A contemporary design for those who crave effortless style with a touch of retro flair, making these black sunglasses an ideal choice.