※Please contact us if you need expedited shipping. We will do our best to accommodate you.※ This item is new, unopened, and has been stored at home. Purchased at Workman for 16,800 yen. This is the ICEMAN inner vest, which is useful in hot weather. It's a vest that uses a water-based cooling system to easily keep your body cool. - Product Name: ICEMAN VEST - Battery Capacity: 3350 mAh - Cooling Method: Water-based cooling system - Set Contents: Vest, Battery Size: Free The box has some minor damage, but there is no major damage. Please check the photos. How to Use ① Fill the tank on the back with about 150ml of cold water. ② Put a frozen PET bottle or ice in the tank on the back. ③ Turn the battery ON