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 - Content: 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 method: Follow the stove's instruction manual and carefully stack the stones so they don't collapse. - Heating precautions: Gradually increase the temperature after ignition. - Loue procedure: ① Pour a small amount of water and check the steam ② After confirming that the stones are sufficiently heated, start the loue 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) can cause cracking. 【Cleaning method】 ・ Wait until completely cooled (make sure it's not hot to the touch) ・ Gently brush off soot and dirt from the surface of the stones with a soft brush ・ For stubborn dirt, wipe gently 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 place 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 stacking and storing (store one by one) ■ Sauna Stone Usage Precautions 【Basic Precautions】 ● Prohibited for use other than the intended purpose ● Prohibited for use by children only ● As they are consumables, replacement is required when they deteriorate 【Safety Measures】 ☑ Always wear heat-resistant gloves ☑ High temperature continues during/after use ☑ Beware of breakage, burns, and fire 【Correct Usage】 × Prohibit rapid heating/cooling × Prohibit immersion in water × Prohibit loue with a large amount of water 【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.