Love them! I always have cold ankles and these slippers come up high enough to keep them warm and toasty. I was a little nervous when I first put them on as my big toe was hitting the seam and my heel felt like it was hanging off the back of the sole but I think my foot just needed to mold itself to the bed of the slipper. So far so good. I just hope they last me longer then my Acorn brand slippers have been. I only seem to get a year out of those. Edited 6/9/13 Well, these slippers did not last. They were warm and toasty but became so loose that they would come off my feet as I walked. More then once I tripped myself up either going up the stairs or down, even falling down 6 stairs. I will NEVER buy these again.