Tag team wrestling is a type of professional wrestling in which matches are contested between teams of multiple wrestlers. Tag teams may be made up of wrestlers who normally wrestle in singles competition, but more commonly are made of established teams who wrestle regularly as a unit and have a team name and identity. In most team matches, only one competitor per team is allowed in the ring at a time. This status as the active or legal wrestler may be transferred by physical contact, most commonly a palm-to-palm tag which resembles a high five.