Stylish but uncomfortable

I ordered these heels for a baby shower. I’ve never worn mules before and for my first my pair these were perfect! I thought it would flop around like a slipper since there is no strap but that did not happen. it was really comfortable I had them on all night danced and had a time! would definitely recommend! I could have sized up for a little space but once I stretched them out it was a great fit!