When choosing a thermos, it is very important to know some criteria by which you can distinguish a high-quality product from a cheap fake, because if you buy a thermos of inadequate quality, then it will be very difficult to use it for its intended purpose.
The first step is to find information about the manufacturer. This information is usually indicated on the body of the product or on its packaging. If there is no information about the manufacturer, then most likely the thermos was made in artisanal conditions and cannot be called high-quality. When choosing a thermos, be sure to open its lid. If at the same time an unpleasant and pungent smell is felt, then the thermos is made of low quality materials. It is imperative to look at what type of food the product is intended for (for drinks or for solid food), and also find out the volume of the thermos. The product packaging should contain information about how long the thermos is able to keep warm. Before making a purchase, you need to carefully study the appearance of the selected thermos - there are no cracks or dents on it, how tightly its lid closes. The thermos should be shaken a little - this way you can find out how well the flask is fixed in it. It is also worth paying attention to what exactly is supplied with the product. It can be a special case, a carrying handle, or a “stop device” that allows you to securely fix the thermos in a horizontal position.
