I love these sandals.  They were so comfortable, I went for a 3 mile fast paced walk and my legs and back were not fatigued at all.  I did however get a blister from rubbing on the back of the shoe and the top of my heel.  (Dumb me... should have broken them in.)  Have done several more 3 mile walks and had no problems with blisters.  Love these sandals!