Our Lava line of blankets are different from our other turbo blankets in that they feature an outer jacketing that is made from an extremely heavy duty and high quality pulverized lava rock fiber instead of silica impregnated fiber. This lava material is actually different than what any other turbo blanket manufacturer uses in that it features an aluminum bonded layer on the inside of the blanket to further reflect the small amount of radiant heat which makes it through the ceramic layer. With this combination of materials we have seen up to 90% efficiency out of a Lava blanket on certain applications.