I found these shoes to be excellent on some fairly tough terrain in Greenland recently (July 2018). They stay secure on the feet when traversing and the vibram soles are superb. The nails on my big toes are easily damaged after many years of hillwalking and I found they were a touch tight against the top of the shoe. So I trimmed the front of the footbed slightly and had no further problems. I can strongly recommend these shoes.