I love these shoes but I had to exchange 8's for 8.5.  That is the only reason I knocked off a star. I have been wanting to try Vibram technology but can't stand having my toes separated. My feet run a bit narrow and width was fine.  However, my second and third toes were crammed against the front of the toe box. Stretching upon wear would not have been enough to make the size 8 pair comfy.  They are incredibly light and I'm looking forward to wearing them on vacation to Yellowstone.  I will update review if any problems are encountered.