They are flat and don’t pose problems for my high arch at all. I wanted decent sound with good balance between lower and upper ranges. Not so. I almost bought the red cause its super gorgeous and I like these shoes enough that I might buy them too at some point. The height of the strap is a little short, but it keeps my feet held firm. Kleines Manko: das Klettgegenstück zum Befestigen des Riemens könnte länger sein. To my fault my expectation for a rich wood look to accent the bike and aesthetics of display was not met. I hope my less than perfect feet don’t ruin it for you, try them, they are so fun! I have already worn them into the lake, riding a bike, of course walking all the time. But heres the best part:The Bluetooth controls are activated by WATER.