Part of what makes every Master Spas tub a favorite among critics and customers is our finely-crafted, form-fitting seats. Every seat is ergonomically designed to fit the contours of your body. Using advanced computer-assisted design, our engineers have created form-fitting seats that perfectly accommodate the human body. We have taken therapy to the extreme simply by creating seats that wrap you in comfort and that deliver the ultimate in hydrothermal therapy from head to toe.