The sauna heating stones of high heat capacity and high resistance to temperature fluctuations are a great addition to you sauna rooms, providing you with a more convenient and comfortable sauna experience. 15 Kilograms of sauna heating stones are included in a single package. These sauna heating stones can be used in sauna heaters. Size: Approx. 6 ~ 8 cm Weight: 15 kg High heat capacity : For safety, please follow the sauna heater instruction on how to fill the stones in the container Sauna Stone,sauna Stones, Sauna Stone, Sauna Stones, Sauna Stone, Sauna Stones, Sauna Heating Stones, Sauna Heating Stone, Sauna Heating Rock, Sauna Heating Rocks, Sauna Stone For Sauna Heater .