The Ergodyne Cooling Vest is designed to provide effective relief in warm environments featuring advanced PVA material that activates quickly and delivers long-lasting cooling for up to four hours. This lightweight vest includes side mesh panels that offer breathable moisture-wicking comfort making it ideal for extended wear. Easily machine washable and hang-dry capable it combines convenience with performance for those who need cooling solutions while working or engaging in outdoor activities. Although its cooling efficiency may diminish in humid conditions the vest’s innovative evaporative technology is particularly beneficial in drier environments helping to keep you comfortable and focused throughout the day.