According to the Adidas Group, 27 percent of all the company's factories are located in China. China has 337 factories, followed by India with 99, Indonesia with 79 and Vietnam with 76. Japan, Korea, Taiwan, Thailand, Cambodia, Pakistan and the Philippines all have between 10 and 60 factories.

Adidas has a long history of excellence within the running world that continues to this day. Quite often, you'll see podium pairs of Adios Pro on the feet of some of the top marathoners in the world.

Adidas sizing is generally true to size. The label themselves advise that for a more loose feel, you should go up a size or, for a more snug fit, try a size smaller. These are, after all, relaxed sports-oriented pieces that need to fit your particular lifestyle.

03/6Serial number on the tag Look for the tag on the product which will have the size and other product information mainly inside the shoe that is behind the tongue of the shoe. Real Adidas shoes have tags with serial numbers for the left and right shoe.