The soles of these shoes are very comfortable, especially for someone with wide feet, but the fixed straps were both so loose that I could easily fit my thumb under each one. My arches are normal height. I should have returned them but needed them for a trip and wore them outside for several hours. Finally, I was forced to remove them as I was worried about falling out of them. Having worn them those few hours, I did not feel it was right to return them so took them to a shoemaker who tightened them too much and now I can't wear them at all. A lesson learned.