Beat the heat this summer with ease thanks to your Chill-Its Unisex Lightweight Phase Change Cooling Vest with Rechargeable Ice Packs. Each cooling vest with packs maintains a constant 64 degrees F temperature for up to 2 hours. The vest is environmentally friendly and uses a 100% biodegradable phase change cooling material. These phase change cooling packs are adjustable thanks to the hook and loop closures on the waist for flexible fit. Cooling vest with 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 Polyester cotton blend construction for lasting comfort and strength Ideal summer work vest for workers in pulp/paper, iron/steel, vulcanizing, foundries, etc. or for people running, biking, doing yard work, riding motorcycle and more Cooling vest comes in two sizes ranging from S/M (32 in. - 40 in. / 81 cm - 102 cm) to L/XL (40 in. - 52 in. / 102 cm - 132 cm) Chill-Its Unisex Lightweight Phase Change Cooling Vest with Rechargeable Ice Packs