Thank you for viewing my work. This is a belt that can hold heat packs, hot water bottles, and ice packs against your body. It's cold every day, isn't it? It's very useful for preparing lunch boxes in the morning, or when you want to use the heater sparingly by yourself, by wrapping it around your waist or placing it on your knees. The rubber belt has Velcro attached. It might be easier to use when it's difficult to secure it by yourself or when it loosens. It's a set of 3 items: a case, a rubber belt, and an aluminum sheet bag. It will be shipped via Yu-packet mini, folded in half. * Cooling * When you have a fever * Headaches * Heatstroke prevention * Muscle pain, bruises, itching, etc. * Warming * For cold protection * For warming activities * When you have lower back pain * When old injuries ache If the disposable heat pack still has some heat resistance left, you can put it in a zip-lock bag and reuse it. You can also use the adhesive type by putting it in here. The example of how to attach it may not be possible depending on the size of the rubber belt or bag. You can also use your own string or belt to use it effectively. You can not only secure it to your body, but also wrap it around chairs or floor chairs. Please check the size to make sure it's not too tight, and I hope it will be useful for the whole family in various situations. ⚠ Please be careful not to put too much strain on your lower back or stomach due to the weight! Please check the low and high temperatures and the weight before using. I have no medical knowledge at all. It's a product that saves on electricity bills and doesn't create waste. It's a reusable product, created simply for comfort. In my home, it's useful in various situations throughout the year for heat and cold protection, and for first aid. Black rubber belt Rubber width: 2.5 cm Soft Velcro: 20 cm, Hard Velcro: 10 cm When the rubber is not stretched, it can be fastened at about 70 cm to 80 cm. Bag part Navy jersey-like fabric, no lining The side opening is about 20 x 17 cm Aluminum sheet bag Keeps cold and heat for a long time, prevents overcooling and getting wet I also sell medium and small sizes, for arms and legs, and pocket-style versions. I also sell extension belts, but please consult with me for changes or custom orders for other sizes. Thank you.