Wal-Mart Super-centers represent leveraging on customer loyalty and procurement muscle in order to create a new domestic growth vehicle for the company. With few locations left in the U.S. to put a new Sam's Club or traditional Wal-Mart, the Super-center division has emerged as the domestic vehicle for taking Wal-Mart to $100 billion in sales. Before the Super-center, Walton experimented with a massive "Hyper-mart", encompassing more than 230,000 square feet in size. The idea failed. Customers complained that the produce was not fresh or well-presented and that it was difficult to find things in a store so big that inventory clerks had to wear roller skates. One of Walton's philosophies was that traveling on the road to success required failing at times.