Your cooler must be large enough to fit your entire box. For food safety, drivers cannot unpack individual items from your box. The box measures around 16x12x10. One cooler we have tested and recommend is an Igloo 72 QT cooler. A 70 qt cooler may also work, but if your box is very full, your driver may have difficulty closing the lid. When looking for a cooler to fit your box, make sure to consider the inside shape of the cooler. Coolers with wheel wells may at first appear large enough to fit the box, but because of how the wheels impact the shape of the inside of the cooler, this may not be true. Same with coolers that slim towards the bottom.