Free-size cool vest with 8°C cooling effect and 43°C heating effect, equipped with a 15000mAh battery. - Brand: NAFCO - Cooling Effect: Approximately 8°C cooling effect - Heating Effect: Approximately 43°C heating effect - Battery Capacity: 15000mAh - Size: Free size - Number of Devices: 4 devices - Operating Temperature: Perceived temperature -20°C Used twice for touring, with no stains or fraying. In good condition. Please understand that this is not a new, unused item. Thank you for looking.