Why are some shirts available only in very large or small sizes?
Some shirts are from, say, our 20th anniversary. We’re at 25 now, w00t! These shirts are not going to be reprinted. (Make sure you read the item description carefully.) We will be adding new shirts for our 25th anniversary and eventually for our 30th. As a result, we will sell out our current inventory in the available sizes, and when they’re gone, they’re gone for good.
We generally have a limited stock of items available through the store. When we sell out of a particular size shirt, we may not be able to order new stock of that size right away. For limited edition or discontinued shirts, we keep the item in the store until all the shirts have been sold. That generally means that less popular sizes will remain for a longer period of time.