Royal Invent Inc. Is specializing Developing EVA Foam roller, Massage Roller, Yoga Prop, Yoga Mat, Balance Pad of supply chain, production of sport equipment, Sport product established in Taiwan. All Royal Invent products are well made of selected premium "Virgin Grade" plastic raw material and examined under strict certified quality control standards. Royal Invent insists on providing worldwide customers with functional style packaging products, complete services and punctual deliveries.