Like Nike has been doing lately, these running shoes follow to trend of incredibly lightweight runners, thriving on a primary emphasis of mesh and thin synthetics. They are extremely cushy and quite comfortable to wear, not only run in. I also must give them props for appearance; they look solid. I think the Royal Blue color scheme looks by far the best; some schemes do not look too great in comparison. The flimsier design does make them bulge and look a bit fat our your foot, but that is only noticeably by the wearer, as I can't tell when looking at them in a mirror, from the perspective of another person. They look great then. The sole is also a bit fat in terms of thickness; I wish they weren't so prominent because I prefer the lower profile sole of the Nike Free line, but it again is something mostly noticed by the wearer. They also get a bit dirty easily, and it seems that durability will be a concern if you are an avid runner. I play sports on campus and my pair has the bottoms of the soles wearing down a bit quickly. I can see that these are great walking shoes, or running on hardwood or tar, but not concrete. All in all, regardless of these quibbles, these are a very solid running shoe choice both for casual or gym wear.