Abdominal harness type belt that is made of a semi-rigid breathable three-layer material of polyamide, foam and polyester, which incorporates a regulation and fastening straps with closing buckles identified by a colour code for easy placement. It consists of a pelvic belt with a perineal strap which, while holding the patient to the wheelchair or other resting system, allows full freedom of movement of the cervical-dorsal area. It is specially designed for people with problems of attachment to the chair, as it helps to hold the patient to the wheelchair or any type of chair, allowing full freedom of movement of the cervical dorsal area.