The task can be a lot tougher than it needs to be if it involves dealing with hot environments. The Classic Cool Vest – Safety Blue will keep you cool and comfortable while the bright blue coloring makes certain others see you. This vest includes one GlacierPack Comfort set that can be replaced without removing the vest. Manufactured with a hermetically sealed outer barrier film, this pack is easily cleaned and sterilized. Features: The Classic Cool Vest – Safety Blue stays at a consistently cool 59°F / 15°C for up to 2.5 hours in 100°F / 38°C heat, keeping your body cool and comfortable, so you can focus more on the task at hand. This vest is made from a vinyl-coated mesh that's both durable and breathable, and can be cleaned by simply hosing it off. Includes one GlacierPack Comfort set Bright blue fabric makes the wearer easily identifiable Mesh material is easy to clean by hand Weighs less than five pounds with GlacierPacks Dry and clean, not soggy and soaking wet like evaporative products Maintains a dry, comfortable 59°F / 15°C for up to 2.5 hours in 100°F / 38°C heat Self-contained, portable and unpowered - no cumbersome hoses, tubes or tethers Made in the USA Glacier Tek Classic Cool Safety Vest With Comfort Pack