ICEMAN PRO X backpack equipped with a cooling pipe system. - Model Name: ICEMAN PRO X - Included: Backpack, cooling system - Cooling Function: Cooling pipe system - Connection Terminals: Power connection terminal Thank you for viewing. ICEMAN Vest PRO X Water Cooling Clothing ICMPX-BLV-SET Black 2024 Model Yama-shin Full Harness Compatible ICEMAN Vest Pro X Thin ICEMAN Used last summer. Approximately 10-20 times. I am selling it because my work environment changed due to a job change, and I didn't use it this year. Contents of the items for sale: - Water cooling vest - Battery - ICEMAN charge bottle (filled with ice packs to enhance the cooling effect) There is some fraying on part of the vest, but Pump operation -> Cold water circulates inside the hose -> Body cools down, so there is no problem in use. If you put two frozen plastic bottles in the bottle, they will melt during use and you can drink them, which is a win-win situation. I don't think I used the charge bottle very often. Pump operation confirmed. Thank you.