This Harness with thorax band prevents the patient from slipping vertically up, and is highly flexible in its application. A band around the chest prevents from slipping and loosen the harness. Together with this product a transversal strap is included, which stops violent or immediate incorporation so that patients cannot injure themselves or others. For non-violent patients, this harness can be used without the transversal strap and the patient obtains a higher grade of mobility being able to sit up on the bed but not slip up.