Celebrate international hockey rivalry with this 2025 4 Nations Face-Off Boston Official Game Puck Cube. This collectible puck is printed with patented heat-sensitive ink that turns purple when frozen, just like the ones used in official NHL matches. This piece of memorabilia also arrives in a clear acrylic case for convenient display and safekeeping, so you can remember the excitement of the 2025 4 Nations Face-Off for years to come.