Very light and well cushioned. Extremely responsive and surprisingly stable according to the treadmill video analysis I had done at Sweatshop when I bought them. However, one word of caution; somewhat stupidly on my part, I first wore them in a 10k road race (I know, I know) and after 3k, both heels tabs were eating into my achilles tendons. I ran the next 7k in agony (out and back course) and my achilles were covered in blood by the end. Admittedly it rained during the race and my socks were cotton/extremely wet which may have contributed to the abrasive effect, but the overall profile of the shoe is much lower in height than most trainers (having compared them with various other Nike models I won) and thus they may simply have been rubbing on virgin skin as so to speak. This said, I might just be unlucky with this particular pair of shoes. Suffice to say I will be breaking these in gently in training once the blisters heal. Truly hope I can get on with these for the various reasons I alluded to at the start of this review. I'm now going back to school to relearn the lesson of not wearing shoes for the first time in a race!