Water Cooling Vest Cool Vest Heatstroke Prevention Unisex Heat Measures Heatstroke prevention vest that cools the body by circulating cold water Although unused, the battery is missing. The packaging has been discarded. The delivery will only include the vest and the instruction manual shown in the photos. Thank you for your understanding. Please refrain from purchasing if you are sensitive to items that have been handled by others. Also, as this is a home-stored item, please refrain from purchasing if you are concerned about initial scratches, stains, or other minor details, or if you are looking for a perfect product. Thank you. Management Number