All Dream Maker spas are one-piece units and totally portable. They are not comprised of wood, metal or vinyl parts, and therefore they will not rust, rot, or rip. We back that claim with our lifetime shell warranty. Dream Maker Spas is also very conscience of the environment. That is why all Dream Maker spas use a State of the Art “Dual Hot Stick” heating system that heats the water without the use of your typical energy guzzling electric heater. Not only is our heating system good for your electric bill it also has a lifetime warranty!