The idea of these is great. I caught these on a Lightning Deal but ended up returning them as they seemed a full size too large and too wide, even though Amazon sent my correct size which is 10.5D (standard width). They would have been slipping off my feet. I only wore them in the house for a couple of hours and found them not only to be too wide and too long but heavy as well. If they ever go on sale again and I can catch them in 9.5 I might take a chance on them again, but overall I think for a shoe of this type and price range, it might be better to try before you buy in a brick and mortar store, then order the size that fits best online.