My daughter (19.5" head) is very happy with this helmet. The shape wraps around the head for safety, the inner liner design does not pull on the hair and back of the head The adjustable strap makes it snug The surface is smooth (great for putting fun stickers) and has enough holes for head cooling It was a useful addition to have knee, elbow and wrist pads to avoid scratching the knee when using to avoid with the scooter.(ugh).