This is a very flexible and minimal trail running shoe. The material is very breathable and it has excellent tread for slippery trails. Two types of terrain I would not recommend running on: large stones (railroad grade) and streets. You can really feel what you are stepping on in these shoes.

Best shoe I've ever run in, road or dirt. Rarely do I buy 4 pairs of a shoe model in one shot, but this time I made an exception. I love minimalist shoes and these bad boys rule the roost. Thanks NB and don't you dare stop making these.

Great shoe! I recently added trail running to standard road running routine, and was used to running in minimal shoes (racing flats & Five Fingers), so my criteria was lightness and absence of cushioning and structure. The MT100 was perfect: good protection from rocks, but no interference with my running style. In fact, I just did a 11 mile road run in them this morning. I've stopped using my racing flats altogether. Only flaw was a really strong chemical odor for the first week or so. It went away after a few runs, but it was so bad I had to leave them outside.

I'll be the one to compare these to my beloved 790s. Although these replaced the 790s, the shoe really couldn't be more different. First, in terms of style, the MT100s with the red N are far superior. My wife noticed them right away; I personally would prefer an all black version as both styles in the MT100 come across as a little too metallic / disco for me, but I can't complain about the wife liking my shoes. Next, in terms of performance, I try to trail run as much as possible, but, living in New York, sometimes I just have to run on whatever I can. This, to me, is where the MT100s have fallen short relative to the 790s: these are way stripped down. As a result, I have had major fatigue issues in my legs. Now, believe it or not, I actually consider this a good thing: I'm working muscles in my lower legs that I didn't even know I had, but, man, the transition is severe (even from the 790s!). I looked at my calves after a run the other day, and they were huge. I'm excited about the tougher runs, but I would suggest that you work into these carefully. In the end, your legs and body will thank you for it, but only buy this shoe if you're running on trails full-time (they're far superior to the 790s on this type of terrain), or you're prepared to go to an almost barefoot style of running (which is a bit of a painful transition). For my transition, I'm using my old 790s to help. I run on the MT100s outdoors on pavement about once a week, the rest on the 790s for now.

I have been trying to find a minimalist shoe that is comfortable for a while. My search is over! This shoe is by far the best out there in my opinion. I have used them on the trail and the street. All around great wearing shoe. Being a midfoot strike convert, this shoe has met all my expectations. Comfort, grip, durability, light weight, don't hesitate to buy them. Great price and service from Zappos. What else do you need? Happy trails.

Nice comfy sandal - I have the tan ones and for a 3 inch heel, they are very comfortable because the footbed is suede, so no sliding. Plus the heel is fatter, but the shoe is still sexy looking.