Harpoon Brewery is betting a Philly counterpart that the Patriots will win the Super Bowl

Harpoon held a Friendsgiving event in November.Harpoon

Harpoon Brewery is so confident the Patriots will win the Feb. 4 Super Bowl that they’ve promised to wear Philadelphia gear if the Pats lose.

The Boston-based independent craft brewery is betting the Yards Brewing Company in Philly that the Patriots will, in fact, come out victorious. Whichever brewery’s team loses will be forced to wear the winning team’s spirit, and Harpoon will offer up some samples of the Philly brewery’s beer during special tours of its facility.

In a press release, a Harpoon representative initially said the brewery would “pour the winning brewery’s beer for one day.” But due to Massachusetts state law, Harpoon is barred from selling beer in its taproom and retail store that was not made in its facility. Instead, a brewery spokesman said it would lead tours through its facility where samples would be available.

“While we’d like to try Yards Brewing Company’s delicious ales someday, we’re confident we’ll be serving nothing but lots of Harpoon after the big game next weekend,” Harpoon Brewery CEO and co-founder Dan Kenary said in a statement. “When the Patriots take home the W, we’ll be celebrating with a cool pint of Harpoon IPA and smiles on our faces, knowing that everyone at Yards Brewing Company is doing the same. Go Pats!”

Both breweries will also be donating a portion of their proceeds to local charities.

From now through the Super Bowl, Harpoon will donate $1 for each Harpoon Fresh Tracks pint sold in their Seaport Beer Hall and $10 for each Harpoon Fresh Tracks keg sold in Boston to the Gillian Reny Stepping Strong Center for Trauma Innovation at Brigham and Women’s Hospital.

Yards Brewing Company will be making similar donations to Prevention Point, an organization that works to fight the opioid crisis in Philly.

Anyone interested can follow the competition on the breweries’ Facebook pages, which is guaranteed to include “some friendly football trash talking,” the organizers wrote in a statement.

Correction: Due to incorrect information provided to the Globe, an earlier version of this story mischaracterized the wager between Harpoon Brewery and Yards Brewing Company.