Baseball season is here and we know you're ready for the action to begin. We also suspect you're ready to add to your collection of MLB apparel, and there will be a great opportunity to do just that on opening day. In conjunction with its cap partner, New Era, MLB will be giving away about 30,000 caps in 13 cities on Monday as part of their #CapsOn promotion . And one of those caps could be yours. [ Sign up for Fantasy Baseball | Play for $40K | Expert rankings | Mock draft ] You've probably seen or at least heard about the #CapsOn movement. It's been all over social media and even national TV shows like Ellen for the past few weeks. But just in case you haven't, this is what it's all about. MLB and New Era want fans to celebrate the return of baseball by wearing the cap of their favorite team. If you were planning to do that already, that's great. You can still head over to the numerous locations where hats will be given away. Those locations, by the way, will include set ups near Capitol Hill in Washington D.C. and the Hollywood Walk of Fame, and as well as 20 different university campuses, which will include Ohio State and UCLA. Which cap will you wear Monday? #CapsOn...