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If you’re a New Yorker, you have a lot of choices to make: Jets or Giants, Knicks or Nets, Rangers or Islanders, and of course, perhaps the biggest cross-town rivalry of all — the New York Yankees or the New York Mets.

As diehard fans know, both Major League Baseball teams first went head-to-head in 1997 and have continued their battle for superiority every chance they get for the last two decades.

Ahead of the next Subway Series on August 22 and 23, the New York Post Shopping team wants to make sure you are well prepared with the best Mets and Yankees gear.

If you’re a hardcore New York Yankees or Mets fan, chances are you already have a hefty spot in your closet filled with your favorite team’s merch. But if you’re in need of replenishment or want more items to add to your collection, we’ve got you covered.

To shop this article by team, click on either link below:

Fact: You can never have too many baseball caps.

If you haven’t splurged on a jersey yet, consider this your sign.

Bucket hats are all the rage these days. Get in on the trend with this khaki option with the Yankee logo.

Wear these gym shorts while working out, lounging around the house (while watching the game, of course), working from home — really, just about whenever.

They make Yankees gear in just about everything these days. Snag these comfy slippers while you can to show your support.

You’ll definitely get great use out of this classic Mets baseball hat.

Are you really a New York Mets fan if you don’t own a jersey?

These Mets x Keds collab sneakers are the perfect addition to any diehard fan’s wardrobe.

Raising a mini Met’s fan? Dress your baby boy or gal in this adorable onesie, so they feel a part of the party, too.

These Nike Performance Shorts feature Dri-FIT technology to wick away moisture and help minimize friction, leaving you cool and comfortable as you practice your swing.

For more content, check out the New York Post Shopping section.