Hello? We are a company established to provide hot packs for warmth and pampering and ice packs for safe delivery of food and medicine to create a well-being culture required by this age. Warm Cushion Caution: Be careful of low temperature burns! Symptoms of red spots or blisters when a heating element with a temperature lower than body temperature is applied for a long time is called low temperature burn. Particularly, there are many cases in which there are no subjective symptoms. How to avoid low temperature burns Do not use on skins directly Do not use on skins directly People with weak skin must make sure to check their skin once every hour Do not use when sleeping Do not fix it with belts after attaching it Remove it immediately if it is too hot Do not use it simultaneously with other heaters Be especially careful when wearing thin underwear such as silk or chiffon slip.