At the dawn of the 21st century, the problem of preserving the freshness of products remains as significant as a hundred years ago.
This issue is especially relevant for lovers of long journeys. How to keep products benign so that they can be eaten on the go?
At the end of the last century, a way out was found. A special isothermal cooler bag appeared. What does this device represent? And how does it work?
Such a bag (isothermal container) is simply necessary if you want your products to stay fresh as long as possible. Most often, it is used for cooling or storing frozen convenience foods. But there are times when it is used to keep dishes hot. People call such models a cooler bag, but this is not entirely true. Any refrigerator has a cooling device. The insulated bag is devoid of it. It performs its functions due to the cold accumulator. Over time, the temperature inside becomes the same as the ambient temperature. How long the bag will keep the food frozen will depend on its specifications. As a rule, larger containers better preserve the cold.
All the useful properties of a thermal bag depend on the cold accumulator.
This is such a plastic briquette into which a special saline solution is poured. The more such devices are in the container, the longer it keeps a low temperature. Without an isothermal bag, the bag can hold cold for up to 3 hours, with it this time can be significantly increased.
What are the advantages of this model?
- An insulated bag can support both cold and hot temperatures.
- Compactness and mobility are two components that make this subject so popular.
- Great design, many bags look very elegant and presentable.
- Reliable protection. All kinds of zippers, visors help to keep products safe and sound. Security locks securely lock them inside, preventing the bag from being accidentally opened.
- Inner convenience. Usually there are several compartments inside a bag. For example, for cans or bottles. And some of them also have a set of dishes. All this helps to arrange the products easily and conveniently.
And, perhaps, the most basic question: "What should I look for when choosing such a model?"
First of all, if you are interested in an isothermal bag, decide on the volume. Their capacity is different - from 5 to 30 liters. For an ordinary family, a medium-sized container is quite enough.
The second important factor is the material of which the insulated bag is made. Usually for this purpose nylon, plastic, polyester are used. They are durable and easy to clean. It is desirable that there is a PVC material inside that has reflective properties.
Next, pay attention to the convenience of transporting the bag. She must have special pens. In case you settled on a rather roomy model, the bag should be equipped with roller wheels. Otherwise, carrying it, and even filled with a large number of products, can be difficult.
Check the reliability and safety of the carrier immediately at the store. The main thing is that the bag does not open spontaneously. To do this, there must be special security locks.
If you carefully examined the goods and everything suits you, feel free to buy a thermal bag. She will serve you faithfully for many years.