I've tried a lot of running shoes and these are by far the best I've ever owned.

My first pair of Tubes were the black and pink version, but the dog decided she liked them more.

The Tube technology allows flexiblility, as well as shock absorption, causing less stress on your knees and ankles.  They bend and flex with your weight.

The shoes are also very light weight.  The mesh also allows a lot of stretch, so if you have a little bit of a wider foot, but wides are a bit too wide for you, this is definitely a good shoe to have.  I have a trouble pinky toe and these shoes don't bother it like my other runners.

Overall, I have recommended these shoes to everyone I can.