These are great.  I am really prone to blisters and these are loose enough to stay on my feet and keep me from skin issues.  I wish they were a wee bit squishier in the sole and that the inner sole had a bit of texture.  I haven't worn them in the water yet but I get the sense that they will be slippery and I will slide around a bit.  The front strap could be forward just a hair, but overall I am very happy with this addition to my sandal collection.