We pack our boxes with dry ice to make sure your food stays frozen while in transit. We modify the amount of dry ice according to regional weather and seasonal patterns to ensure that each box is packed with enough to stay frozen during shipment and through the end of your scheduled delivery day.  Daily Harvest food is perishable and must remain frozen to ensure the highest level of ingredient quality and food safety, so it's important to get your items into a freezer ASAP after delivery.