I bought two pairs of RYKA cross trainers. Of the two, these are fantastic! I originally thought these would only work for running, but they actually work for everything I do. I do kickboxing, step aerobics, P90X, weight training, bootcamps, running outdoors, and eliptical machines, these shoes help my flat fat feet during all of them.

The shoes have good flexibility that conforms to your feet, while offering support. I bought new shoes because my old ones were causing knee issues, these shoes quickly reversed that problem, so I have no knee pain... at all!

I STRONGLY recommend these shoes. They are perfectly made.