Dec 29, 2020 - 10:17 AM
72 Hour Activated Heat Packs While they are a nice insurance policy against cold temperature fluctuations while traveling, they will not provide enough warmth while your package is out on delivery in very cold temperatures for more than an hour or two. The delivery vans typically have open doors to the storage area so the driver can quickly run to the back. The walls of the trucks are also very thin, and not heated to save on fuel costs. We always recommend choosing "Hold for Pickup" so that your parcel is never on the delivery truck in very cold weather.