Kobayashi Sangyo's Goyururito Lite. There are no noticeable scratches or damage. The instruction manual is not included. This is an easy-to-use zabuton (cushion) type that allows you to enjoy ganbanyoku (hot stone spa). It's not just a heat mat; it's a genuine product using 8 Tamagawa wave ceramic plates. This product is recommended for those who suffer from cold sensitivity. Recently, my product photos and descriptions have been used on suspicious websites other than flea market apps, and are being sold at a discount of about half the price. I only sell on well-known flea market sites and apps, so please be careful not to purchase from other sites. ※Caution※ It will be wrapped in air cushions and shipped in recycled cardboard or wrapping cardboard. Please do not purchase if you are looking for perfection. Returns are not accepted unless there is a defect on our part. Please understand and purchase. [Product Details] Quoted from the manufacturer's website Isn't radiation bad for the body?? Large amounts of radiation are harmful to the body, but low-dose radiation like "Goyururito" is beneficial to the body. Conversely, it is said that people cannot live without a small amount of radiation. The "hormesis effect" has been discussed in recent academic societies and newspapers. What about lifespan and maintenance? The effect of Tamagawa wave ceramic will not disappear. As long as the ceramic is present, the effect will last semi-permanently. Also, no special maintenance is required. Wipe with water as needed (use alcohol if the dirt or odor is severe). You can dry it in the sun if you want to dry it, but if you leave it in the sun for a long time, it may deteriorate. Please dry it in the shade as much as possible. How long should I use it? Please use it up to about 3 times a day. At first, use it for 30 minutes a day, and after using it for about a week, gradually increase the time, such as using it for 30 minutes twice a day. It is recommended not to use it for a long time from the beginning. How much does it cost for electricity? It is economical, costing about 126 yen per month when used for 1 hour a day. Are there people who cannot use it? If you have been advised by a doctor not to take a bath, please ask your doctor about using this product. If you use a kotatsu or a stove in your daily life, there is no problem.