Although these shoes don't fit me true to size (I'm slightly larger than a measured 11.5, but can wear an 11 in *some* pairs of this shoe), they may be the first pair of basic flats that I have ever found to be comfortable. I've tried on many, even purchased several duds that caused blisters or had uncomfortable soles/interiors. These flats have a little bump of padding on the heel to help the shoe stay on while you walk, a nice wide toe box, and padded soles. Joy!