Product Description: Just snap on your back and waist. U-cut opening for easy opening Stable warmth lasts for 14 hours. Why the highest and average temperatures are reversible, without sticking? On average, the paste type is higher because the temperature curve is different, the paste type will be higher. The application type is applied to clothing and is set based on morning to night, but the non-stick type is set to last as long as possible. The paste type has an adhesive sheet so you can stick it to your clothes. The adhesive sheet agent has selected that there is no residue on the clothes when removed, and is too strong to not damage the clothes, and is a good balance among the heavier and non-peeling items that will not peel off during use. The texture is slightly different from the application type or the type you do not stick on. The reason is due to the difference in surface processing of non-woven fabrics. The type that you do not always use in your hand is a hard material that does not pile up on the fabric, and the type you do not hold in your hand, we put it on with a focus on softness than strength. Caution: Please do not use it in the same place for a long time. Check your skin condition about once per hour. If you notice any abnormalities, please remove it immediately. Do not use it when sleeping, as it is easy to burn on low temperatures. Those with sensitive skin should be careful of low temperature burns. Remove immediately if you feel too much. Please be careful when using this product if you cannot remove it immediately by yourself, such as those with disabilities. Please do not use in futons or with heating appliances as it will become hot. If you have a temperature or blood circulation disorder such as diabetes, please consult a physician or pharmacist as there is a risk of burn. When using with thin clothing such as underwear, please be careful when using with low temperature burns.