The Vital Energy Insulation System features eco-friendly insulation made from recycled natural fiber. This insulation contains no chemical irritants, and is treated with a borate-based solution that prevents mold/mildew growth, pest infestation, and acts as a fire retardant. Vital Energy has been approved by the U.S. Green Building Council to replace urethane foam commonly used in “foam filled” hot tubs. Our new energy-efficient system is also what allows for easy serviceability of our hot tubs and can be re-installed to factory specifications within minutes.