Glacier Tek Spare Cooling Pack Set - for use with vest styles: Sport, Banox, Classic, Hi-Vis, Concealable

Packs fit Glacier Tek sports, concealable, original and classic cooling vests Recharges in ice water in 30 minutes, freezer in one hour, or refrigerator in two hours. Nontoxic cooling material maintains a comfortable 59° F for 2.5 hours Set consists of 4 large packs and 4 small packs -- use only as many packs as you need to stay cool Each Spare packs weigh 16 ounces each and measure 18" by 5.25" by 0.5."