In keeping with the throwback theme to the Winter Classic, the new design is navy blue with light blue accents and features the team's original logo from the 1967-68 season. The Penguins wore various shades of blue from 1967-80.
The team called the design a "fusion" of different Penguins' uniforms from different eras.
"We wanted to create a uniform that celebrates the rich history of Penguins hockey, but with a new look -- giving fans something they would really like," said Reebok director of merchandising Keith Leach, according to a Penguins release that quoted him.
After debuting the new uniforms at Heinz Field on Jan. 1 against the Washington Capitals, the Penguins will wear them again Feb. 10 against the Los Angeles Kings and March 12 against the Montreal Canadiens.