Bought these for my 6 y.o. & wasn't sure if she'd like this style or if they'd be comfy but they seem to be a winner here!  She is very sensitive to shoes that rub her heels.  These Umi Moraines are super soft & flexible and the heels have not given her problems at all.  We got the Purple Shimmer color and they are gorgeous!  I was afraid the color would be 'too purple' and bright and would clash w/a lot of her clothes, but they actually are dark enough that she can wear them with just about anything.  Sizing was pretty true to size & the ridges on the bottom are good for traction & play shoes, but not obnoxious enough that they prevent these from being cute dress up shoes either.  I wish they made something similiar for adults!  :)