The Wellness JetPak is a combination of 3 different types of jets that starts with a light pulsating massage for the shoulders and upper back, progresses to a more firm massage in the mid back, and features a powerfull deep tissue massage for the lower lumbar region. The effect is an incredibly soothing and therapeutic sensation. Learn more: www.bullfrogspas.com/listings/custom/124/45/wellness 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