St. Patrick’s Day is less than three weeks away, and one of the biggest celebrations of the holiday will occur in Chicago, Illinois. One of the city’s famous traditions is to dye the Chicago River green for the day.

This year, Stan’s Donuts & Coffee, a Chicago hometown favorite, is introducing a specialty donut lineup that pays homage to Chicago’s green-river-dyeing tradition. The donut lineup includes the returning St. Patrick’s Day Sprinkle Donuts ($1.99), an Irish Creme Bismark ($2.79) and Green River Glazed Donuts ($1.99).

New to the lineup this season is the Chocolate Dipped Emerald Donut ($2.79), a bright green cake donut dipped in chocolate, drizzled with white chocolate, and topped with festive sprinkles. All of the St. Patrick’s Day donuts will be available from Friday, March 6 to Tuesday, March 17.

Stan’s also will offer Irish-themed coffee drinks—Mint Hot Chocolate, Mint Mocha, and Irish Cream Cold Brew. These beverages will be available for the entire month of March.

This St. Patrick’s Day, Stan’s is offering its most devoted fans a chance to march with the iconic donut shop in Chicago’s St. Patrick’s Day parade on Saturday, March 14.

To qualify, entrants can indulge in one of Stan’s limited-edition St. Patrick’s Day donuts and post a selfie on social media, tagging @stansdonutschicago. One lucky winner will get to bring up to four friends or family members and join the Stan’s team in the downtown parade, greeting parade-goers and shooting a Stan’s t-shirt gun. The winners will also be welcomed with free coffee and donuts, gift cards, and a swag bag with Stan’s coffee and merchandise.

The deadline to enter the social media contest is noon on Tuesday, March 10. Winners will also be announced Tuesday, March 10.