Do note that the jersey sizes available are linked to the jersey number you will wear in Pro-Circuit events.
Thus only specific combinations are available and in case the size / number you want is no longer available it means another team member already picked this combination.
Possible combinations are:
Once those are used the 6th player of a team confirming an invitation can pick:
You can contact email@example.com in case you want to swap sizes / numbers with another player of your team.