Metallic gradation 5. Product Name: Workman Wind Core Ice x Heater Peltier Vest PRO2 Fixing Parts Compatible Products: Workman Item No. WZ-5 2025 Model WindCore ICE x HEATER Peltier Vest PRO2 Wind Core Ice x Heater Peltier Vest PRO2 Product Contents: Large device fixing parts: 1 piece Small device fixing parts: 4 pieces Improvements: ✔ Improved version to solve the difficulty of attaching and detaching. ✔ The trick to removing it is to push and twist. ✔ The outer diameter of the large device part has been made larger to prevent the cooling device from falling out even if the hole in the vest stretches. Remarks: Please use for parts repair, spares, and maintenance. Due to being created with a 3D printer, there are unique layer lines. We have confirmed the installation, so we are listing it 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. Please refrain from asking for a discount.