These
shoes are very well constructed. I like the fact that the
sole is not too thick, unlike some other similar
shoes. My five year old daughter, who is very sensitive about comfort, loves putting them on. My daughter's feet measure in between size 28 and 29 using the UMI shoe size chart (you can download from their website). We debated between ordering size 29 or 30, and went with the 30. We are about to fit slightly more than a finger's length between her heel and the back of the shoe. So technically size 29 would have been a better fit, with room to grow. It seems like UMI does factor in "room for growth" even when you order the correct measurement.