I purchased two pair, one each for my 9 and 10 year old dancers. These are perfect! I ordered size XS for both. They are currently wearing child size 1 and 3 in street shoe. I love that they can wear them outside because the sole is made to go outside and will not wear out in a matter of weeks like the Bloch booties. Also great since my 10 yr-old changes in the car going straight from school to ballet. She can put on her ballet slippers, throw on the booties and walk outside. So great for the upcoming cold weather Nutcracker season. LOVE that these are made for indoor and outdoor use! And the colors are great! We have the green and the grey. Beautiful! Also very nice that they are different from everyone else so they won't get lost in someone else's bag.