Instruct: Classify the given review into positive or negative sentiment.
Query: A must for hot weather camping.

I do a lot of off-the-beaten-trail camping in the desert Southwest for up to 10 days at a time. The summer temperatures will often get up to 105 to 110 deg. The Engel MT-45 fridge does an excellent job keeping perishables cold but in the desert heat, this transit bag is a must. The transit bag provides a significant extra layer of insulation so that the fridge doesn't have to run all the time to keep up in the heat. Besides providing protection to the MT-45, the transit bag will cut the fridge's net power consumption considerably. Without the transit bag, my MT-45 would draw close to 2 amps on average on hot summer days. With the transit bag, my MT-45 draws 1.1 amps on average. If you're running on a solar charged AGM battery bank as I do, the difference in power consumption is important.