The goal of this clinical trial is to demonstrate the improvement of motor functions related symptoms in patients with MS and spasticity using Exopulse Mollii suit stimulation in Multiple Sclerosis patients with spasticity. The main questions it aims to answer are: * to evaluate the short-term impact of EXOPULSE Mollii suit on balance in adult MS patients suffering from spasticity. * to assess the effects of EXOPULSE Mollii suit on mobility, upper and lower limbs muscle tone, pain, fatigue and quality of life. Participants will participate in: * One baseline visit for inclusion during which the patient will undergo the first session (active or sham) along with evaluations (before and after the session) * One visit after two weeks during which the patient will undergo the second session (active or sham) along with evaluations (before and after the session) * One visit after two weeks of the second stimulation condition; the patients will undergo a third evaluation and receive the EXOPULSE Mollii Suit for the four-week open label phase and will use the suit at home for an active stimulation session every other day for four weeks. * One visit at the end of the open label phase to perform the fourth and last evaluation and return the EXOPULSE Mollii suit. Researchers will compare both Active and Sham groups to demonstrate the improvement of motor functions related symptoms in patients with MS and spasticity using Exopulse Mollii suit.