Because this is such a durable product, we think it’s ideal for outdoorsy people; perhaps if you’re going out climbing or cycling and want something that’s going to resist these kinds of environments. Moreover, it won’t leak, sweat or burn your hands, so it’s got everything going for it. One of the most interesting things about the soup flask is that it’s actually a great way to keep your food fresher for longer. Since the flask is sealed with a vacuum, it’s incredibly difficult for germs and bacteria to get inside. No oxygen can get in which can speed up the process of spoiling and everything stays fresh and ready to eat. For best results, please ensure that your food or liquid is heated sufficiently prior to insertion into your SHO Food Flask.

The Hydro Flask insulated food jar was one of the simplest designs we tried and the 28oz (828ml) version offered some serious capacity. You can also get a smaller 20oz (591ml) version, though. The vacuum flask also has a screw-top lid with a seal that helps to stop heat from escaping from the opening. Earlier, we talked about how most soup flasks are designed with a stay cool exterior but this isn’t always the case. You’ll want to choose a flask that doesn’t get hot to the touch on the outside as this can lead to burns and is a serious safety issue. BudgetYou get an outer lid that can double as a cup while the inner lid is sealed for waterproofing and insulation. The inner lid also holds a foldable spoon so you have everything you need to take it on the go. Of the food flasks we tested, we think the Thermos Stainless King food flask would be best for soups.

For kids, there are smaller capacity ones of around 300ml. These don’t weigh as much, will fit into lunch boxes and, as kids generally eat less, there’s nothing going to waste. Finally, think about how easy it is to clean. Some flasks are dishwasher safe but it’s almost always better to wash it by hand. For this reason, a flask with a wider opening is generally better.Thermos is the most well-known brand for making insulated flasks so they’ve got it down to a fine art. However, the silky smooth stainless steel finish made tightening and loosening the lid much harder. On the plus side, this made cleaning it super easy - handy as it can’t go in the dishwasher. You get a foldable spoon with this food flask, which is stored on top of the inner lid. The inner lid also features a secret compartment just below the spoon, which can be used for storing salt and pepper if needed. France, Germany, Italy, Spain, Ireland, Netherlands, Austria, Denmark, Poland, Sweden, Czech Republic What we particularly liked about this one was the range of colours it’s available in, meaning it’s easy to get a shade you like.