The Engel Transit Bag does three things, the first thing is that it protects your investment, Engel have a great resale value so if you decide in a few years time that you would like to update your Engel to a larger unit you can remove the transit bag and the unit looks near new you get better money for it. The second thing is the transit bag helps insulate so the fridge holds temperature long and the compressor doesn’t need to run as often. The third thing is the storage pocket on the front of the bag allows you to store you cords, user manual and purchase receipt in so where ever you travel with you Engel you have everything you need. (Please refer to “Transit Bags” in the Fridge Accessories category).