Stay cool while working outside this summer with the Chill-Its Rechargeable Phase Change Ice Packs for the Lightweight Cooling Vest. These phase change cooling packs are adjustable thanks to the hook and loop closures on the waist for flexible fit. A heavy-duty zipper closure on the front of the vest makes taking it on and off easy. Ideal for workers in pulp/paper, iron/steel, vulcanizing, foundries, etc. or for people running, biking, doing yard work, riding motorcycle and more.