Just amazing! I live full time in a little RV, recently I was out of state for a couple weeks. When I returned my power had been out for who knows how long. It took about 4 days to get everything I needed to repair it. The Ninja Frostvault kept my food and drinks refrigerator cold for three full 4 days and could’ve gone another day or two. It’s hot in south Texas but this cooler came through for me.