Use a sample in the player’s actual size and ask them to reach overhead, cross the arms and shoot. Record where the armhole binds, gaps or rubs. Test with the base layer the team expects to wear.
Agree on the measurement points
Have the supplier mark the shoulder-to-underarm reference points on the size chart. Record the sample size and measurements on a flat surface, then ask how changes will grade across the size range.
Approve movement and coverage together
Recheck the revised sample during overhead reach and a defensive stance. Photograph the shoulder and underarm with the player’s permission, record the approved size and sample version, and attach the check to your purchase order.
Review custom basketball uniform options and request a quote with your specifications.

