Product Name: Workman Wind Core Ice x Heater Peltier Vest PRO2 Fixing Parts Compatible Products: Workman Model Number WZ-5 2025 Model WindCore ICE x HEATER Peltier Vest PRO2 Wind Core Ice x Heater Peltier Vest PRO2 Product Contents: Large Device Fixing Part: 1 Small Device Fixing Part: 1 Improvements: ✔ Improved version that resolves the stiffness of attaching and detaching. ✔ The trick to removing it is to twist it while pushing it in. ✔ The outer diameter of the part for the large device has been made larger to prevent the cooling device from falling out even if the hole in the vest stretches. Remarks: Please use for repair, spare parts, or replacement. Due to being created with a 3D printer, there are unique layer lines. Since the installation has been confirmed, it is listed as "Like New". Please pay attention to the size and quantity. Also, please refrain from leaving it in a car in the hot sun, as it may deform.