For reference, Topspin is a software platform that helps artists connect with their fans and sell to them directly. This is why you see our name at the bottom of purchase windows, receipts and emails from artists.
Unfortunately, we do not have insight into specific merchandise size specifications. If you would like sizing information, please contact the artist in question directly. You should be able to find contact information on their website or, if not, you can reach out to them via one of their social media accounts. Sorry not to be able to help out more on this occasion!