We just used these on a recent ski trip.  We ordered the small, which is just right for her -- not tight, not too baggy; she's between a 5 and a 6 in most kids' stores.
PROS:  My daughter loves the pink color and the shiny material.  The material is soft and comfortable.  She also loves the thumb holes.
CONS:  After 1 washing on a delicate cycle, the threading is already coming undone at the wrist.  Since my daughter loves the thumb holes, the end of the sleeve gets pretty dirty by the end of the day.