 | Ray-Ban Rb4421d Bio-based Sunglasses Algae Green Frame Grey Lenses 56-18. Ray-Ban RB4421D Washed Lenses Bio-Based sunglasses are perfect for those looking to make a statement. The algae green color of the frame adds a unique touch, while the light grey lenses provide 100% UV protection. Plus, the pillow shape is flattering on everyone.... - Ray-Ban Rb4421d Bio-based Sunglasses Algae Green Frame Grey Lenses 56-18. |