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The invention, stems from the real need encountered by a disabled person during his physiotherapy sessions in the swimming pool (loss of use of the legs and the abdominal/lumbar area following a serious motorcycle accident).

Unfortunately, he did not find any suitable technical device to support him in a controlled and safe manner during the dive. In other words, despite possessing a very expensive exoskeleton used by the region, he does not use it except inside the house and with limited performance.

In fact, immersion lightens the weight of the body, (like in the space) making such a rigid and robust exoskeleton superfluous and also absolutely unsuitable to be immersed in water.