The Helo sauna stones are a 20 kg set of natural black diabase rocks sourced from Sweden, each with a diameter under 10 cm. These stones are specifically designed for use in electric sauna heaters, providing efficient heat retention and distribution for a consistent and enjoyable sauna experience. They are thoroughly washed to ensure they are clean and virtually dust-free, reducing the need for pre-washing before initial use. Made from durable diabase, these stones are known for their resilience to high temperatures and repeated heating cycles, contributing to long-term reliability. Ideal for residential or commercial saunas in pool and spa settings, they support even steam production when water is applied. The set is packaged securely to prevent damage during transit. This product is a successor model of previous Tylö sauna stone offerings, maintaining the brand's focus on quality and performance in electric heating applications.