© Martin Web Design 2011 Rubber Stone is a new product made from 100% recycled rubber chips and a polyurethane binding agent.  It creates a soft yet durable surface and comes in these standard colors. 100% Black 10% Beige 10% Blue 10% Yellow 10% Brown 10% Green 10% Grey 10% Red For more information on these Sierra Stone products, please complete the form on our Contact  page or visit the Sierra Stone corporate website.