Peltier Vest Cold and Warm All Season 【TULTEX】 ※Note: Batteries and ice packs are not included. A cool vest made of mesh material by TULTEX. Temperature settings from -20°C to 49°C are possible, so it can be used all season. - Brand: TULTEX - Model Name: COOL & WARM SILENT PELTIER VEST - Temperature Settings: -20°C / 49°C I have used it a few times, but the frequency of use was low and I haven't done any strenuous activities, so I think it's relatively clean. I am selling it because I have less opportunity to use it as I have more office work than on-site work. Please refrain from purchasing if you are nervous or seeking a return. We do not accept returns or exchanges to prevent product substitution. Everything in the images is included. Batteries and ice packs are being used for other purposes and are not included with this product. There are no problems with the operation. As shown in the photos, the power has been confirmed.