I have bunions on wide-ish forefeet and pretty much zero arches. I bought the cognac sandals below a few months ago and concluded that they work for me because my bunions stretch the straps reasonably snugly over my non-existent arches plus the crossing straps provide support. I have avoided slides due to the volume issue until I saw the black Topshops below. I figured I could risk a possible $22 mistake. They are PVC so stick a little to my feet (no clacking) and are comfortable because their whole size Euro sizing works for my foot length.