reflective water heater jacket insulation fits 50 gallon tank r value 6 (tape) aes water heater wrap, water heater energy saving & hot water heating loss prevention save money, energy and help the environment reduce 9% heating cost bills, reduce heat loss up to 40% fire rated class 1 / class a, non toxic, will not irritate skin, eyes or throat improve the efficiency of 95% of all water heaters in use today easy to install and easy to clean fits gas or electric water heater contains no fiberglass recover your investment in a few month prolongs the life of your water heater non toxic / non carcinogenic