This thesis investigates the convenience for Multiple Sclerosis (MS) patients to create a new physical therapy product that integrated with water. It will provide an easier treatment process by reducing the time, effort and financial difficulties caused by physical therapy during the treatment process. MS is a chronic illness that affects the function of the brain such as seeing, speaking, walking and feeling in negative ways. Most patients suffer from especially walking on land. However, the situation changes when they contact with water. They start moving their muscles which they cannot move; because the water has a lifting force which reduces the weight of the patient. In addition, it prevents the force of the joints and it helps to facilitate active exercise without forcing the joint. Physical therapy is a method that applied to people who are a congenital disability, injured for any reason or who have a chronic illness. There are many types of physical therapy, but the most effective and the easiest way for patients is the therapies applied with water. As a result of this knowledge that has been learned and observed; the designed product is integrated water while all requirements are taken into account to ensure ease of use when designing. Following the product to be produced, patients will be able to continue their treatment freely in their living areas instead of going to a hospital or treatment center. At this point, they will not have to pay for expensive treatment sessions, waste time on the roads and will get a more comfortable treatment process. Keywords: Physical Therapy Hydrotherapy, Aquatic Therapy, Multiple Sclerosis (MS), Design