● Cool Your Body in 3 Easy Steps! (1) Fill the tank on the back with approximately 150ml of cold water. (2) Charge the tank on the back with a frozen plastic bottle. (Alternatively, you can use ice.) (3) Turn on the battery. Easy to operate with the battery stored in the front. ● Features (1) Lightweight It's lightweight because it only uses a small amount of water and a frozen plastic bottle, so you won't feel the weight. You can make it even lighter by adjusting the size and amount of frozen plastic bottles, ice, or ice packs according to your usage time. (2) Quiet You won't notice the motor noise even in quiet places. (3) Long-lasting Cooling Long-lasting cooling is possible with ICEdripControl (under patent application) developed by Yamashin. (4) Fast Charging When the cooling effect is over, simply replace the frozen plastic bottle to complete charging. Also, frozen plastic bottle beverages are sold at convenience stores nationwide in the summer, so you can use them as a charging spot. (5) Quick Cooling Effect Even if the cooling effect is over, the cooling effect will be restored in a few seconds by charging a new plastic bottle. (6) Hydration You can drink the frozen plastic bottle when it melts. ■ Set Contents ・ Iceman Vest x 1 ・ 3,350mAh Lithium-ion Battery (with timer function) x 1 ・ Charging Cable x 1 ■ Iceman Vest Specifications ・ Wear Material: Outer fabric vinyl (nylon), lining polyester ・ Tank Material: TPU ・ Cooling Hose: Silicone rubber (Color: Black) ■ Pump Specifications ・ Pump Output: 7.4V150mA (maximum) ・ Flow Rate: Maximum 320-37ml/min ■ Battery Specifications Lithium Battery KBTS-3350W ・ Yamashin Seikyo Co., Ltd. ・ Battery Voltage: 3.6V ・ Battery Capacity: 3,350mAh ・ Dimensions: 95 x 65 x 25mm ・ Weight: Approximately 88g ・ [PSE Mark Certified] Compliant with the Electrical Appliance and Material Safety Law PSE mark technical standards. DC3.6V/3350mAh/12.06Wh ■ Dimensions [Free (Equivalent to S～5L)] ・ Chest: 80～130cm ・ Shoulder Width: 30cm ・ Length: 43cm ・ Front Length: 36cm ・ Back Length: 47cm The box has scratches, but the item is unused.