This is THANKO's "Overwhelmingly Cooling Refrigerated Clothing 2". It has a cooling effect of up to -15°C from the outside temperature and directly cools the back with an extremely cold plate and a strong wind fan. It uses a PELTIER COOLING system, the same cooling system as a refrigerator. It is washable and free size. [Brand] THANKO [Functions] Extremely cold plate, strong wind fan, PELTIER COOLING [Cooling Effect] Up to -15°C from outside temperature [Coldness] 3 levels [Airflow] 3 levels [Size] Free size [Other] Washable Note: Only the items shown in the photos will be shipped. (The original description is missing.) Note: The warranty has expired as it has been over a year since purchase. Please do not purchase if you do not understand that this is a used item, if you are overly sensitive, or if you have a poor evaluation history. We may cancel the order in some cases. Thank you for your understanding. Please note that the item may be sold out or suddenly removed as it is also listed on other sites. No returns, no exchanges, no cancellations (3N).