Box lacrosse The roots of indoor lacrosse are obscure, but its invention has been attributed to one Paddy Brennan, a field lacrosse player and referee from Montreal, who, being annoyed by the constant slowing of play from balls going out of bounds in the field game, experimented with indoor games at the Mount Royal Arena during the early 1920s. Joseph Cattarinich and Leo Dandurand, owners of the National Hockey League's Montreal Canadiens in the 1920s, led the participating ice hockey arena owners to introduce the new sport. In the 1930s, 6 v 6 indoor lacrosse came to be played in the summer
Box lacrosse lacrosse stick, each player must also wear a certain amount of protective equipment, including a lacrosse helmet with facemask, lacrosse gloves, arm and shoulder pads, and back/kidney pads. Rib pads are optional in some leagues. In some box leagues, especially the NLL, the five "runners" wear helmets specifically designed for box lacrosse. These helmets consist of a hockey helmet with a box lacrosse face mask attached instead of a hockey cage. During a typical game the number of officials can range from one to three, depending on the league and level of play. In most games there are at least