First of all, these are *not* slip-ons. They have traditional laces that need to be tied. The sole is relatively stiff, but not so wide that the shoe is uncomfortable. The upper is soft and worn like wrap-around sandals. Fits to size as expected.
Pros
Not for long walks
Cons
Sizing Issues: US size range 11-11.5 M may not fit all foot sizes, which may cause discomfort and blisters.