I'm a teacher, so I'm on my feet all day. These shoes are highly advertised for teachers for their comfort. I bought black tieks for $175. I've had them for 2 months and I wouldn't say they are more comfortable than any other flats I've own. In fact, they were quite uncomfortable during the first week because the back kept digging into my heel. My feet also sweat more in these shoes, causing them to stink when I take off my shoes.
Hope this helps!