These slippers might have too much arch support.  I own several Vionic shoes, but after wearing these slippers, my knees started hurting. Also, my foot kept sliding towards the front with toes hanging off the edge, even after I tightened them a lot! I have wide feet so it wasn't because the slippers were too big. Plus, the slipper beds smelled like stinky feet....wonder if this pair was defective or something.