Youth jerseys are sized by age band, and the top of the youth range overlaps adult sizing in a way that confuses a lot of buyers. This guide explains the ranges and the measurements that actually decide the fit.
How youth sizing works
Youth charts are published in age bands, usually from small children up to early teens. The bands are approximate: a tall nine-year-old may need a size meant for eleven. Treat the age label as a starting point and the chest and length numbers as the real spec.
Measure chest and length
Measure the child's chest circumference and the length from the shoulder to where you want the hem to sit. Compare both to the chart. Length matters more than most parents expect, because youth jerseys are cut short and grow out of date quickly.
When to move to adult small
Move up when the child is at the top of the youth range and the length is already short, or when the chest measurement crosses into the adult small band. An adult small will be longer and roomier, which is usually better for a growing teenager than a youth size that fits for one season.
Buying a gift without measurements
Ask for the child's height and usual shirt size, then check the chart. If you cannot get either, choose the middle of the age band rather than the top. A jersey that is slightly loose is wearable; one that is too short is not.
Custom names and numbers
Customised youth jerseys are usually final sale. Confirm the size against the chart before adding a name, because a custom order cannot be exchanged for a different size in most stores.
Youth charts vary by brand and season. Confirm the size band on the product page. Paid links on this site may earn us a commission.