The patented Bullfrog JetPak Therapy System helps you design your perfect hot tub experience with a personalized feel. Choose between 17 uniquely different hydrotherapy massages. You place them in your favorite seats and switch them around from seat to seat as you like. Each JetPak has a control dial so you control the intensity of the therapy so it feels best for you. Because there is less plumbing, there is less resistance for more power. Make the JetPak seat as strong as you want it or gentle and relaxing as needed. There is simply no comparison for a truly personalized hot tub experience.