A vacuum container, like a flask provides insulation between the stored contents and the environment, thus managing to maintain the temperature of the contents, at which they were stored. The word Thermos has been associated with vacuum flasks, as Xerox is associated with photo copying. Thermos is a German company which first manufactured the thermos flask and since then has remained the major provider of vacuum containers.

Among the vacuum containers, Thermos mugs are gaining popularity, due to their ease of use and portability. In using a Thermos flask the contents have to be poured in a glass or a mug and then consumed. In the thermos mug the pouring part is eliminated and it has a proper lid which does not leak. Many individuals especially those who commute daily, now prefer a thermos mug to a flask as its easy to use and carry. The thermos mug, is now available in many shapes and sizes. There is a wide range to choose from, and one pick the size and shape which is correct for them.

One of the popular model among the different thermos mugs, is the Everyday 450 Travel Mug. The body is made of stainless steel and the insulation is by a vacuumed partition between two walls of steel. This insulation is quite superior and is known to keep a liquid hot for at least two hours. Also works for cold storing, and can keep the liquid chilled for the same amount of time. It stores a little less than half a litre of liquid and is ideal for holding a full cup of coffee. The designing of the mug is very good, and it fits the regular cup holders in cars. The length of the mug is about 17 inches and size does not seem too bulky and is convenient to carry around. The lid has a drink-through aperture, which makes it easy to handle and minimises any splashing. This product comes with a guarantee for five years.

Thermos mugs has another popular model, which is the JMQ400P Leak-Proof Travel Mug. This mug is known for its extra insulation capacity as it is has two vacuum layers. It is known to preserve the temperature for a long time and thus keeps the freshness and flavour of the drink. Even when you fill the mug with boiling liquid the outside remains cool, thus making it easy to handle and carry. When filled with cold liquids, you will not find any condensation on the outside. Although it has a capacity to hold 14 oz., it has a design which is compact and has a carabiner for attaching to backpacks or bags. As the name suggests it has a seal which totally eliminates any kind of leakage. It sits very nicely in any vehicle’s cup holder, and has a convenient handle which is rubberized. This mug is made for rough use and the stainless steel body withstands all the trials of daily use. It stands only around seven and a half inches tall, with a width of four and a half inches.