Select items at the Mets Team Store will be marked down all the way to a 75-percent discount.
But you don't necessarily have to leave your house to take part in Blue Friday. Beginning at 6 a.m., all purchases at the online Mets Shop will get a 20-percent discount, and orders between $50 and $99 will get a 25-percent discount. Purchases over $99 will get a 30-percent discount.
And if you're able to get to the Mets Team Store -- located just off the Jackie Robinson Rotunda at Citi Field -- Saturday, you'll have the chance to take holiday photos with Mr. Met from noon to 2:30 p.m.
Spencer Fordin is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.