Adodas Stan Smith usually made with a leather upper, has a simple design and unlike most of the Adidas range has no external stripes. Instead there are three rows of perforations in the same pattern. There is a sketched picture of the tennis player on the tongue of the shoe. During a November 17, 2009 interview that aired on The Tony Kornheiser Show, sports agent Donald Dell said the original Stan Smith green-tab shoe has been in production since 1972, and generated more than US$65 million in revenue in 2008. Dell added during the same interview that the shoe is now available in eight models, and the brand is the biggest-selling tennis shoe ever.