A. High Density Insulation, B. Warm Air, C. Sealed Bottom

Insulation: Polar Master Insulation System

With superior structural support, our industry-leading system operates on the same principal as a thermopane window—by trapping warm air between two layers of high density insulation. In fact, the pocket of air is warmed by the heat put off by the pumps and the heater—converting precious energy that would otherwise be wasted, into money-saving efficiency. In addition your Down East™ Spa features a solid non-corrosive bottom for years of support and protection.