at $10 they are an experiment. I'm pretty sure the boots will fit in ok, they are smoother than my running shoes which fit fine. I'm betting the sandels will be ok as well. Besides at that price if they last 2 months before the bearings fail I'll be surprised. My bikes are my only form of transport and my pedals don't last more than 3000-5000km at best before the bearings fail and I LOATH wobbly pedals.