Variations on the puck
Blue Puck: For children too young to play properly with a standard puck, there is a lighter puck weighing 113 grams (4 ounces).
Orange Puck: To practice shots and improve hockey stick skills, a heavier puck weighing 283 grams (10 ounces) is sometimes used.
Steel Puck: To improve strength in the wrist, for example, a puck made from steel and weighing 900 grams is used. This puck must not be used in a game, only for training.
Illuminated puck: In 1983, Eberhard von der Mark developed a puck with an LED, which flashed for a few seconds when the puck was struck. However, this variation never advanced to become standard.