The Costa Del Mar Neoprene Cord is the ideal safety system for your treasured Costa Del Mar Sunglasses. The Neoprene Cord is made with premium Neoprene materials with a heavy duty nylon stitching for durability and added strength. The Costa Del Mar Neoprene Cord is designed specifically to fit snugly on all styles of Costa Del Mar Sunglasses. Add some style and keep your Costa Del Mar Sunglasses safe and secure from the dreaded accidental drop with the Costa Del Mar Neoprene Cord. (Sunglasses Not Included)