The crease is the shaded region right in front of a hockey goal. This is when a hockey goaltender works hard to stop goals and where opposing players are not allowed to interfere with the goalie. The crease is six inches deep by as wide as the net. In ice hockey, the goalie's mask must be worn underneath the helmet. However, this rule is not enforced during youth games or practice sessions. Goalies often wear a face protector called a goggle while playing, but these are removed for ice hockey competitions. During ice hockey games, fans can call out instructions to the goalie via a coach or manager. For example, they may tell him to move his feet if there is the chance of a breakaway opportunity. Coaches also may give directives from behind their bench if they see a player struggling too much with something like covering a lot of space or making many big saves. There is no limit on the number of people who can be coaching athletes in sports such as ice hockey; however, only one person at a time can speak directly with the athlete. Otherwise, he would be unable to make any adjustments between shots. There is some debate among ice hockey commentators as to whether or not the goalie should be considered part of the "defence", since he is preventing goals by stopping pucks with his body.