NHL Colorado Avalanche Reverse Retro Jersey 2021 Official Game Hockey Puck (6oz. 1x3"). The Colorado Avalanche is one of just a few NHL teams to use the Reverse Retro Jersey design series on the NHL official game puck during game play. Showcased in a clear acrylic presentation-worthy cube. Inglasco Inc. is the exclusive game puck supplier to all 32 NHL teams. The back of your official team game puck features the NHL shield printed with patented heat sensitive ink it turns purple when frozen just like the actual puck used in every NHL Game!