I got te Air GP matching jersey and pant for my son, age nine (Y24 pants, medium Y jersey). Matches great, and super comfy for warmer desert riding days. I especially like how non-restrictive the pants are, they have all the features of the adult version of Air GP. The only hang up is that the buckle on the pants refuses to unclasp unless maximum squeezing is applied, which is super frustrating! Jersey runs quite large.