Remove from the individual packaging and place around your neck. Remove from the packaging and use without rubbing. Apply directly to the skin. *The product will become warm upon opening, so use immediately. Discontinue use once the heat generation has subsided. Once the heat generation has subsided, the product cannot be reused. *Caution: Please read the following before use to ensure safe use. /Danger: Beware of low-temperature burns. Low-temperature burns are caused by prolonged exposure to a heat source higher than body temperature, resulting in symptoms such as erythema and blisters. Please be aware that low-temperature burns may occur without any noticeable symptoms. Consult a doctor or pharmacist if you have diabetes, poor circulation, a history of allergic reactions to medicines or cosmetics (itching, rash, redness, etc.), are pregnant, or are receiving medical treatment. If you experience itching, irritation, rash, redness, low-temperature burns, or peeling after use, discontinue use immediately and consult a doctor or pharmacist. Sensation may vary from person to person. If you feel it is too hot, or if you experience pain, discomfort, or any other physical abnormalities, discontinue use immediately. Avoid prolonged use on the same area. If you have sensitive skin, check your skin for any abnormalities approximately once an hour. If any abnormalities are found, discontinue use immediately. Do not apply pressure to this product with a belt or supporter. Avoid use while sleeping. Avoid using this product near heating appliances as it may affect the temperature of the heat generated. Take special care when using this product with people with disabilities, children, or those with sensitive skin. There may be powder (black dots) on the seal of the product, but this does not affect the quality. <Handling Precautions> Do not get this product wet or heat it in the microwave. Do not cut, knead, or forcibly deform this product. Do not use on any body other than the human body or for purposes other than those intended. This product is not edible. If swallowed, spit out the contents and seek medical advice. If the contents come into contact with your skin, rinse immediately. Do not use this product if damaged. After use, make sure it has cooled down and dispose of it according to the rules of your local city, town or village. <Other>Store away from high places in direct sunlight. Do not use by small children or people with dementia. Also, keep it out of their reach. Product appearance specifications may change without notice. The temperature retention time may vary depending on the usage environment. We take every precaution to ensure quality, but if you receive a defective product, please send it to the manufacturer listed below along with the date of purchase, store name and packaging. We will replace it with a new product.