2025 Peltier Vest PRO2 Brand new, unused item. The store has opened the packaging once to stamp the warranty card with a sales verification stamp. This year's model has been upgraded with five Peltier devices, and the cooling temperature has been further lowered, making it a step up from the 2023-2024 models (3 devices). 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: Dial-operated adjuster - Size: Free size - Number of Peltier devices: 5 A six-month warranty is included for initial defects, so please contact the manufacturer directly for assistance. Thank you.