What To Look For
The Nike Free is a running shoe that allows your foot to move in a natural, manner as you run---almost as if you're running barefoot. They are low to the ground, feature many flex grooves, have soft and supple uppers and look more slipper-like than your average running shoe. You can find Nike Free running shoes at specialty running stores and some bigger general sporting goods stores.
Common Pitfalls
Nike Frees can be too flexible and lack enough support for some runners at first, so you may need to run with them until you've become accustomed to them. They are best suited to efficient, lightweight runners who are experienced and in excellent shape.
Where To Buy
Stop by your local running shop to try on Nike Frees and find the ones that fit you best. If you are looking for a special color, then you can buy them directly from nike.com, as well as eastbay.com, finishline.com and zappos.com.
Cost
Nike Frees are a mid-range-priced running shoe with a manufacturers suggested retail price of $85, and while you may find older Nikes on sale, these are probably too new to be reduced in price.
Comparison Shopping
There are three shoes in the Nike Free line, including the Everyday, Free 5.0 and Free 3.0. The Everyday is recommended for those new to running in minimalist footwear such as the Free, as it has more support and cushioning than the other models. The Free 5.0 is for runners used to minimalist footwear or who have previously used the Everyday. The Free 3.0 is the most minimal of the Free line, with a very simple, sock-like upper and a low-profile mid-sole.
Insider Tips
Take your time transitioning into running in Nike Free shoes. Start off by running short distances two or three times a week to get accustomed to these minimalist shoes, then work your way up to running in them all the time.