The Ray-Ban RB4454 Lukas Bio-Based sunglasses, model 0RB4454-66773153-RB, feature a polished transparent grey frame and gradient grey lenses, offering a chic and eco-friendly design. Crafted from high-quality bio-based acetate, these sunglasses are lightweight and comfortable for all-day wear. The rectangular frame shape provides a stylish and elegant look, while the gradient lenses ensure excellent UV protection. Ideal for both casual and formal occasions, these sunglasses are a versatile addition to any wardrobe. Ray-Ban Lukas Black Green 0RB4454-66773153