Nike Free 4.0 Flyknit

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The Nike Free 4.0 Flyknit is an incredibly comfortable shoe with a lightweight and flexible construction thanks in a large part to what has to be the greatest upper in any shoe I have had the privilage of wearing. The Flyknit upper felt like a second skins and didnot cause the slightest discomfort on even long, rainy runs. For the price, however, the out-sole just left too much to be desired, with incredibly poor traction and perhaps questionable durability