Neoprene rubber is a very modern material. Metallic is a contemporary color. We have combined them for you in a 4mm thick finished necklace. Choose from any of our vast line of pendants and beads for your next choice of jewelry components. We select neoprene rubber for a very good reason. Unlike natural rubber, it does not burn or tarnish silver. This 18-inch necklace is just waiting to be added to your designs! Get this one today or browse for finished necklaces in other lengths, styles and colors. The neoprene rubber material is latex-free, so it's safe for anyone to wear!