Product details:

Cotton vest zips closed to hold cooling inserts close to the wearer. Reusable inserts are activated by ice water or in refrigerator and stay cold up to 3 hr. A thermal liner helps extend cool time. Vest includes inserts and a zip-closed cooler bag. Weight: 1 lb. vest, 1 lb. each for 4 inserts (total 5 lb.). Spare inserts sold separately.