I'm a nurse and have been wearing Alegria shoes at work. I really like the Alegrias, but I strained my left foot somehow and I kept re-aggravating it at work. The Alegria style I was wearing were the backless mule style, so I thought I could use a shoe with more support. I saw that Klogs were popular with nurses, so I thought I'd give them a try. I bought a size 11 pair, and they were slightly too big, but I kept them. The back of the shoes didn't keep to my heel, they moved as I walked. I read that this is the way this style of shoe is supposed to fit. I'm normally a size 10 but seemed to need a larger size when I moved to the shoes with backs. I found these Klogs to be extremely comfortable through a 12+ hour shift. Also, my left foot pain went away. I got a lot of compliments on them as I got the pink Graphic Floral print with butterflies. My feet feel very cushioned when I walk. They seem to be made well, I'll see how they last compared to my Alegrias.