JUST WHAT THE DOCTOR ORDERED The 5506-person tub has up to 106customizable jets and one cooling seat, that suits the tastes of everyone. Whether you like to stretch out and float or alternate between periods of warm with breaks of cooling, the 550 allows for seamless shifting between the two. With loads of space, it's just what the doctor ordered in helping you unwind and recharge. Add energy saving technology to your 550 with our Hybrid3 options.