This one is going to give you an unfair advantage over other runners, especially when you consider it contains three stainless steel shock absorbing springs to give you that extra boost while you are running or simply jogging. These shoes help reduce stress plus fatigue that is associated with running.
They are so powerful that the USA track and field has decided their use as illegal because of the unfair advantage it was providing to the users. Two of the three springs are located in the forefoot and one of them in the heel. Get yourself a pair today and see the amazement on the faces of others while you sprint. Costs $129.95
Check Out: http://ww2.hammacher.com/Product/11901