This is a cool matte black and gold finish. For adults who appreciate the difference. A new design with a rugged and wild image. 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 Small device fixing parts: 4 Improved Points: ✔ This is an improved version that solves the problem of difficult attachment and removal. ✔ The trick to removing it is to twist it while pushing it in. ✔ 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 repair, spare parts, and maintenance. Since it is made with a 3D printer, there are unique layer lines. We have confirmed the installation, so 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. Please refrain from asking for a discount.