Black cool vest with cooling function, equipped with a 5200mAh battery, perfect for comfortable heat対策. - Color: Black - Function: With cooling function - Battery Capacity: 5200mAh - Number of Pockets: Multiple pockets - Design: Cooling unit on the back Used for one season (used less than 10 times) Purchased at a home center in 2023 Original price was probably around 13,200 yen It's the type that circulates cold water by putting in a frozen 500ml PET bottle and water, so your entire back will feel cool. Usage time is about 2.5-5 hours. Comes with battery and instruction manual. There is no smoking or pets, so I don't think there are any noticeable odors. It's a beautiful item with little wear and tear, but it's used, so please only purchase if you don't mind the small details.