MSpa Round Thermal Cover (for Mono & Duet)This cover is intended to be compatible with the MSpa Mono or the MSpa Duet Thermal spa cover minimizes heat loss and maintains water temperature, cutting down on energy consumption and lowering your heating costs Crafted from durable materials to shield your spa from dirt, debris, and harmful rays, prolonging the life of your spa Lightweight yet firm design allows for effortless handling, making it simple to cover and uncover your spa as needed