Originally Posted by WildVolley
Wasn't the Nike Breathe Free 2 basically a modified running shoe with a slightly tougher sole?
I had a pair years ago. It looked like a running shoe, had an elevated heel with the big airbags under it, and was reasonably flexible. Actually, the bars connecting the heel to the forefoot on the outsole snapped on mine right away, so that might have made it more flexible.
The BF2 (the GOAT tennis shoe, IMO) felt like a running shoe because it was way, way less material than any prior tennis shoe. This made it feel like a running shoe when you held it in your hand, but on the court the outer upper (the cage style) gave almost as much support as the old leather tech, at about a third of the weight.