I ordered my normal size and it fits perfectly. This is a great LED light, really bright, the angles seem right. Didnt fit but its a real nice shoe. But the process of getting them on was a bit of a pain. The rope/webbing design is beautiful, but it is extremely flimsy. Ich hoffe das ich Ihnen damit ein wenig behilflich sein konnte. SO if you too have a high arch/instep, be mindful of your size when ordering as you may want to go up a size too. Its a great case, but for the JBL E50BT I would rather buy a bigger one. The attached photos are taken after half a year of wear and after their first hand-washing (they were looking kinda grisly from residual foot oil). If youre only playing one of the speakers it works pretty reliably.