Workman 2025 WindCORE Wind Core ICE & HEAT Cooling and Heating Clothing Peltier Vest PRO2 New, Unused - Purchased in-store *Warranty (Purchased May 3, 2025) The salesperson opened the box and wrote on the warranty, which is included in the box. Compatible Height: 155-185cm Compatible Chest: 80-124cm Weight of Peltier Device: Approximately 530g (Weight of the device set including switch cord, etc.) Material: Body: 90% Polyester, 10% Polyurethane Mesh: 100% Polyester Waterproof Rating: IPX4 equivalent (splash-proof) - Usable in light rain and splashes Set Contents: Peltier device / Dedicated vest / Dedicated battery / Dedicated USB cable / Type-C conversion cable / Instruction manual I only assembled and tested it after purchase, and I haven't worn it. The blue protective seal on the Peltier element is still attached. You can use it immediately upon arrival without any troublesome assembly.