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. Cooling vest packs maintain constant 64 degrees F temperature for up to 2 hours Cooling packs reactivate in as little as 5 minutes 30%-60% lighter weight than other cooling vests Environmentally friendly and 100% biodegradable phase change cooling material Grid ice pack design eliminates stiffness Two zippered front pockets Phase change cooling packs are adjustable thanks to the hook and loop closures on the waist for flexible fit Heavy-duty zipper closure on the front of vest makes taking on and off easy Polyester cotton blend construction for lasting comfort and strength Vest sold separately Ideal for workers in pulp/paper, iron/steel, vulcanizing, foundries, etc. or for people running, biking, doing yard work, riding motorcycle and more Chill-Its Unisex Rechargeable Phase Change Ice Packs for the Lightweight Cooling Vest, 4-Pack