100% chain with genuine gold or silver components. Over 600 feet of linked chain go into a single top. Patent pending 4-way stretch technique allows this top to fit a variety of body types and hug your curves in the way your want them to be hugged. Racerback style. Made to order. As seen on Ciara, Keke Palmer, Teyana Taylor, Becky G, Trace Lysette, Jillian Michaels and others.