A human body appendage supporter has elastic members that apply pressure to the appendage to retain the appendage in a desired position. The supporter is a one-piece structure having elastic side straps joined to one or more elastic top members and a pair of elastic bottom members. The supporter when placed on a person's head with the elastic members around the chin and the top members over the top of the person's head biases the person's mouth closed so that air flows through the nasal airway passages.