The Ray-Ban RB4421D Bio-Based sunglasses, model 0RB4421D-68188556-RB, feature a polished algae green frame and light grey lenses, offering a chic and eco-friendly design. Crafted from high-quality bio-based materials, these sunglasses are lightweight and comfortable for all-day wear. The pillow frame shape provides a stylish and elegant look, while the solid color lenses ensure excellent UV protection. Ideal for both casual and formal occasions, these sunglasses are a versatile addition to any wardrobe.