Abstract: A body restraint device for restraining the body of a person from sliding from an upright sitting position to a slumping position or a position out of the chair or seat upon which it is desired to retain the body of the person. The body restraint device is of generally T-shaped configuration and includes a crotch portion which is joined to the center of an elongated waistband portion. The waistband portion includes a pair of opposed waistband wings which carry interlocking loop and hook portions of an interlocking fastening material. The part of the crotch portion which is most distally located with respect to the waistband carries a plurality of slots which are adapted to receive therethrough the waistband wings to permit the restraint device to be wrapped around the abdomen and hips of the person whose body is to be restrained.