We craft the strongest base for all your experiences and keep them safely. So it consists of building materials such as screws, cable covered by plastic and transperant plastic tube. The nude detail is also handmaded and made of melted plastic. Necklace is also decorated with Swarovski pearl. Every Mellow piece has it's own life code, so do this one - N4/015. As well it means this product is one of the kind.