Keratex Thermal Clay - 400g400g tub of powder makes around 850g of clay paste. The first ever self heating hoof clay powder that mixes and warms instantly with cold water. Can be used warm or cold. Transforms cold water into a warm, soothing hoof paste that gradually cools down to ambient temperature no need for hot water, kettles, flasks or waiting for boiled water to cool. It can also be used without heat by mixing and allowing to cool down to ambient temperature.