Cell Saver(TM) solves the problem of heat soak into batteries, absorbs leaking acids and prevents premature failure due to heat. Batteries are very susceptible to heat and vibration that could cause premature failure and hazardous leaks. Cell Saver(TM) is very capable of damping vibration and will absorb and neutralize any damaging leaky battery acids. Cell Saver(TM) is easy to install and excess material can be trimmed to accommodate batteries of most sizes and shapes. Protects batteries from harmful radiant heat Material withstands up to 2000F radiant heat Traps & neutralizes harmful battery acid Protects environment and your vehicle Completely safe to handle before and during installation Clean finished look with easy installation Kit Includes: 40 in. L x 7 in. W insulation material 12 in. x 7 in. treated base mat