Cow Leather/Synthetic Leather The MEXICO 66 model combines the features of the original LIMBER-UP training shoe that debuted in 1961 and the design of Limber shoe debuted in 1966, as one of the first models that featured the iconic Onitsuka Tiger Stripes. With modern design elements, the MEXICO 66 model still retains the feel of the 1960s. The model remains an Onitsuka Tiger icon from when it first debuted.