2022 NHL Heritage Classic Official Game Puck Design (6oz. 1x3"). 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 2022 NHL Heritage Classic Official 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!