A massager in which a backrest and side walls holding massage members have a unified form and is provided. The massager has: a backrest including, in an integrated fashion, a backrest section in which a massage mechanism for massaging a users back is provided and a pair of projecting sections which project to the left and right-hand sides from at least the upper part of the backrest section side walls which respectively project forwards from front surfaces of the pair of projecting sections and air bags which are provided respectively ON inner side faces of the pair of side walls and used for massaging the sides of the user leaning against the backrest section.
