These sandals look as if they won't stay on but I assure you they do! This is my fourth pair (all in different colors) and I would buy another in that wild pink color I've seen if I could find them in my size. I have a bad knee(post surgery)and these are the only shoes I've found that keep my knee from hurting when I am on my feet for a long time. I absolutely love them. I wear them 24 hrs a day in the summer time. The big bonus is that they look nice too. I think most people are surprised if they look closely and discover they are actually composed of rubber, or whatever it is!