2025 Peltier Vest PRO 2 Brand new, unused item. The item has been opened once by the store to stamp the warranty card with a sales verification seal. This year's model has expanded the Peltier devices to 5 locations, further lowering the cooling temperature, and is an upgrade compared to the 2023-2024 models (3 locations). A free-size cool vest equipped with 5-point cooling and heating functions, with instant cooling to -28°C and instant heating to -39°C. - Model: WindCore x PRO model - Cooling Temperature: Instant cooling -28°C - Heating Temperature: Instant heating -39°C - Battery: 30,000mAh - Adjustment Function: Dial-operated adjuster - Size: Free size - Number of Peltier elements: 5 A six-month warranty is included for initial defects, so please contact the manufacturer directly for support. Thank you.