I use the pants up and running and have it now. Three times in different colors They fit perfectly, not fluttered, not tweaks, does not slip, the phone fits easily in the pocket and also jumps not too hard around in it. The inner fabric is pleasant and especially not of cotton; no sewn inner pants exists, I personally find good, then it's not so sweaty. I would always buy the pants again, especially since they also still looks really good in bright red and bright green.