The FibroTherapy JetPak is engineered to help alleviate pain and discomfort in the muscles of the back and to provide a deep, yet soothing hydromassage experience for daily therapy in your hot tub. Learn more: www.bullfrogspas.com/listings/custom/119/45/fibrotherapy The JetPak Therapy System by Bullfrog Spas is the only modular hot tub jetting system that can be personalized specifically for you. You choose your jetting configuration, intensity, and the spa seat in which you prefer to place each JetPak. See more at: www.bullfrogspas.com/jetpaks