I bought these shoes to run the Mt. Camelback and I wear them for 4 runs before return. It is good shoes for people who weights below 150lb and high up to 5'10" and who is not aggressive in mountain trails run. The shoes are very soft to give you comfortable feeling if you run even or almost even surface, but if you jump on rocks a lot and do twists on your feet to hold a landing balance or continue to run in new direction - this shoe will not hold you firmly to absorb your body movement. It is just too soft for aggressive runners. Beginners will benefit from the shoe design - it holds you body firmly and comfortable if you don't have speed. It is good mountain walk show.