We had a hard time finding mittens of this quality in these small sizes. My four-year-old daughter got these for Christmas and we love, love, love them.
We have used the vents for cooling down on a warm day, and for hand warmers on a really cold day!
The straps both at the top of the mitten and at the wrist are great. They fit over her coat and still tighten enough to stay on while on the mountain. We got the Tokyo print and they look great with all her coats