Bryce Harper is on a mission to make baseball — and baseball off days at the National Museum of Natural History — fun again this season, so the Nationals are selling merchandise in the team store at Nationals Park to support that effort. On Friday, “Make Baseball Fun Again” shirts ($30) and caps ($20) were prominently featured inside the entrance to the store.

The MLBPA-licensed “Make Baseball Fun Again” shirts are one of the latest offerings from BreakingT, a company founded by a pair of D.C. sports fans who turn trending topics, events and memes into T-shirts. They also recently produced a “100 Emoji” shirt to celebrate Harper’s bat decals. The shirts retail for $24 on their site, plus $5.95 for shipping.

The hats are similar to the one Harper wore in the clubhouse after hitting a home run on Opening Day. Unlike previous seasons, the Nationals own and operate their team store this year, giving them full control over inventory.