A walk-in tub shower combination can help a senior citizen or a person with a defect that limits his mobility get clean more easily. The tub-shower combo works the same way as the more traditional tub and shower combos do. Controls on the front let a person adjust the temperature and flow of the water. The tub has a drain to let the user fill it up with water.The way a walk-in tower tub shower combo differs from a regular bath tub is that there will be a seat on the inside of the tub. A door opens on the side, much like a vehicle door. When this door is closed, the system becomes watertight.The sliding door lets a person walk in the tub without having to lifter or lower his legs. For people with Arthritis, injuries, long-term conditions, the act of lifting the legs over the side of the tub