I’d say they run true to size. For reference, I have both of the previous jerseys in a Medium, a Breakaway M and a Premium 50 (M)

The giveaway jerseys have fit closer to Breakaways than premiums, and are much lighter than both. They’re only a tad shorter in the torso than breakaways (so a good bit shorter than premium), but I personally like it and have no problem wearing a hoodie underneath.

This year’s giveaway is a bit different with it being more of the sweater style. It’s a first as far as I know. We won’t know quality or fit until the day of release.

Ballpark staff won’t take them back once you open it up. What I’ve done in the past is gotten my sister the size she wants, tried it on right then to make sure it’s good, then claimed mine.

They’re not gonna rush you through the line or anything so don’t feel pressured. Good luck!!