The Reliever JetPak is one of the most popular in the JetPak Therapy System. This hydromassage combines a smooth kneading sensation in the upper back with targeted deep tissue therapy for the lower obliques and lower back region. Learn more: www.bullfrogspas.com/listings/custom/127/45/reliever 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