Kangaroos

Kangaroos first hopped onto the scene back in 1979. The American inventor and fanatical jogger Robert Gamm never knew where to put his change and keys when he went off on his daily 10 km run. So he designed a sports shoe with a little zip-fastened pocket. From spring 1980, some 10,000 pairs were sold in California alone and the phenomenon was soon exported to dozens of other countries.