Superfeet have been in my snowboard boots for as long as I can remember. I originally started out with the basic Superfeet that you trim to fit your feet. I then graduated to the Kork version. The Kork version of Superfeet are custom made to fit each one of your feet. Superfeet Kork's provide ultimate support and also help with keeping your edge and transferring power. Superfeet can also be used for all types of shoes; casual, running, dress and even women's high heels.