Lightweight and great traction even on wet rocks. Toes are tapered so that roots and rocks don't grab and trip you. I wear them when running the Appalachian trail in NH and VT. They even aren't bad on the road when I take the occasional shortcut home.

These are very light and comfortable, they don't have hard soles like cleats but are more like wrestling shoes with a pliant sole and a great amount of traction. They are good for running, but the flexible sole makes them difficult for rocky terrain and I wouldn't substitute them for lightweight boots as some lightweight hikers are trying to do.

While I don't wear these shoes to train in, I have run several 50Ks in these shoes and I have performed very well in them. They are very light, and can climb up a tree. Traction on these shoes are excellent - it is almost like a soccer cleat or a xc cleat for your hardcore trail runner. Not a lot of toe protection so be careful when you run on very rocky terrain. Also, not a lot of ankle support (I knew both of these things when I got the shoe). If you can handle them, they will make you feel like a pro!