The perfect companion for a long road trip or family holiday, a coolbox can help keep your snacks fresh and your drinks cool. Choose one that plugs into your car’s 12-volt power socket and you can enjoy cooled food for longer, or if it connects to the mains in your house, you could even use one as an overflow fridge or pre-cool items ahead of your journey. The main role of a cool box is to keep food and drinks cold, so we tested each of our assembled eight boxes for efficiency by running each at their coolest setting for two hours. Before and after temperatures were taken and there were compared to ambient temperature to asses cooling power. We also made sure to see how well everyday items fitted, as well as checking for extra features like mains power connectivity and heated settings. Price was also a consideration in our final results. This cool box was joint best-in-test, boasting a temperature drop of 15.3 degrees. We were impressed by its build quality and good-sized compartment too; four 1.5-litre bottles were easily stored. There was no temperature control or mains power option, and we weren’t as impressed by its carry handle as on its larger cousin below, but the Halford...