ThermoCore Reflective Heating Mats. Specially manufactured foam pads provide both a thermal break and thermal reflection of heat back to the source. Highly efficient with up to 90% heat recovery. Covered in soft plush with a water resistant bottom the ThermoCore mat can be used indoors or out and on any surface. Zippered cover allows for pads to be removed for easy machine washing. Made with all new materials for cover and fill. Sizes for each of New Age's Rustic Lodge, Santa Fe Chalet and ThermoCore Canine Cabin model dog houses. Can be used in or outside a dog house or crate.