The most popular types of wager are the mask of a masked wrestler or the hair of a non-masked wrestler, most commonly put against each other in Mask vs. Mask (in Spanish: Máscara contra Máscara), Mask vs. Hair (Máscara contra Cabellera), or Hair vs. Hair (Cabellera contra Cabellera) matches. Throughout Mexico, when a masked wrestler loses their mask, they are not allowed to compete under a mask with that same gimmick. In addition to masks and hair, championships, or careers—as a form of retirement match—can be put up as the wager in any combination.