CORDURA material used, ice water cooling vest. Place a frozen 500ml plastic bottle on the back and add water. - Brand: Ahisshu - Product Name: Ice Water Cooling Vest - Material: CORDURA - Battery Capacity: 3350mAh Thank you for viewing. I purchased this item this year and used it three times. It shows signs of use, but the battery has been tested and is working. Please note that this is a used item, so please refrain from purchasing if you are sensitive to such things. No claims and no returns, please understand. There is no box, but the instruction manual is included.