These are sold as frames only the Lenses need to be replaced. The Ralph Lauren RA5138 601/13 sunglasses feature a tortoise-patterned square frame with dimensions of 58mm lens width, 16mm bridge width, and 135mm temple length. The "3N" marking indicates a category 3 lens with normal tint, suitable for bright sunlight conditions. These sunglasses are crafted from lightweight, hypoallergenic plastic, ensuring durability and comfort. The design offers a refined take on an iconic silhouette, combining vintage styling with modern flair.