This welded slinky-style dog is made from a spring, nuts, bolts, washers, and threaded metal rod. As cute as it is, remember it's a piece of art, not a toy. Not recommended for kids; if the spring is "boinged" or twisted too much, it will break. Since each dog is made by hand, no two are exactly alike. However, they are all materially similar. Dimensions are approximate. They have a clear powder coat finish. Free ground shipping is included.