EZCool Vest Replacement Cooling Packs (4PK)

1 set of 4 cooling pack inserts. PCM is non-flammable, non-toxic, and non-combustible. To activate place in freezer, refrigerator, or cooler with ice set at 58°F. Set time of 45 minutes to ensure packs are frozen solid throughout. Cooling effects last for up to 3 hours. Cooling packs are deployed in a variety of shapes and sizes for personal comfort and maximum cooling results