Foot surgery a couple of years ago has left me with a deep need to be very careful and supportive with my feet. A friend let me try her Flip Flops. Once was enough for me to want nothing else. First time, a long walk on uneven ground and I was more comfortable than in my runners, (which are expensive runners). I lived in hers for this holiday but before leaving I ordered 3 pairs and they're all as wonderful. (Need free shipping to Canada, too!) Z-straps are just as great. Now I want some decorated/designer/pretty ones I can wear with slinky things as I don't want to wear anything else on my feet.