Sun Stellar offers you three kinds of stainless steel tanks: Stellar Pure – 5 Layer SS Tank, Stellar Ultra – 7 Layer SS Tank, and Stellar Cocoon – Double Insulated Tank. We at Sun Stellar take the best of the raw material to provide the best to the customer who leads to No health hazards and no fungal growth in the tank. Sun Stellar Tanks guard the water from heating up and maintains the water warmth.