Made-in-Japan sauna stones provide a comfortable sauna experience with excellent thermal conductivity. "The Appeal of Domestic Natural Stone and Outstanding Durability" - Size: 5cm-15cm - Contents: Approximately 20kg - Country of Manufacture: Japan - Material: Natural split stone (domestic) *Hard sandstone (regular component testing is conducted) - Quarry: Suzuka City, Mie Prefecture This product is characterized by the peace of mind and excellent cost performance unique to domestic natural stone. ■ Sauna Stone Usage Guide - First Use: Rinse off the surface powder with water. - Installation: Follow the stove's instruction manual and carefully stack the stones so they don't collapse. - Heating Precautions: Gradually increase the temperature after ignition. - Low-Lyu Procedure: ① Pour a small amount of water and check for steam ② After confirming that the stones are sufficiently heated, begin Low-Lyu in earnest - Post-Use Precautions: The stones are still hot even after the fire is extinguished. Be careful of burns. ■ Proper Care for Sauna Stones 【Cooling After Use】 ● After use, move to a non-flammable place such as a firebrick or metal tray and allow to cool naturally. ● Rapid cooling (such as pouring water on them) can cause them to crack. 【Cleaning Method】 ・Wait until completely cool (confirm that they are not hot to the touch) ・Lightly brush off soot and dirt from the stone surface with a soft brush ・For stubborn dirt, wipe lightly with a tightly wrung wet cloth ・Dry completely in a well-ventilated place 【Storage Precautions】 ● Choose a well-ventilated place with low humidity ● An ideal location is one that is not exposed to direct sunlight or rain ● When storing for a long time, it is best to put them in a breathable box or cloth bag 【Special Notes】 × Do not use detergents or cleansers (may alter the stone) × Immersing in water when hot is strictly prohibited × Avoid storing them stacked (store them one by one) ■ Sauna Stone Usage Precautions 【Basic Precautions】 ● Prohibited for use other than the intended purpose ● Prohibited for use by children alone ● As they are consumables, replacement is required when they deteriorate 【Safety Measures】 ☑ Always wear heat-resistant gloves ☑ High-temperature state continues during/after use ☑ Be careful of breakage, burns, and fire 【Correct Usage】 × Rapid heating/cooling prohibited × Immersion in water prohibited × Low-Lyu with a large amount of water prohibited 【Tips for Handling】 ● Be careful of impact when moving ● Natural cooling is basic ● Regular condition checks are recommended ※ Please be sure to follow these for a safe and comfortable sauna experience.