The abdominal belt and its perineal part are made of breathable and semi-rigid materials with three layers (foam, polyester and polyamide). It has buckles and fastening straps to facilitate placement by the patient identified by a color code. The pelvic belt with perineal strap allows the patient to be fastened to the resting systems while providing freedom of movement of the cervical-dorsal area. The patients for whom this product is intended are those with good antero-lateral control during sitting and with a tendency to slide out of the seat.