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Latest crucial points in buying guide for thermos

A cup of coffee is a popular way for many to begin their day. A quality coffee, be it cold or freshly brewed, will help make a better start. All we need is a quality thermos to hold the drink for a longer period. Given the accessory may come in different sizes, shapes, and colors, we have come up with several key points in the following buying guide for thermos.

Size and capacity

The first step in purchasing a thermos is to pick the right thermos size. Most travel mugs come in 12-16 oz (360-470 ml), 16-24 oz (470-700 ml), and 32 oz (950) varieties. Although we can buy larger jugs, they aren't practical for commuting or walking around town. However, a large one will be handy for family trips.

Heat retention

An ideal thermos should be capable of keeping drinks hot or cold for at least four to six hours.

The type of thermos material can make a difference in protecting the drink. A good vacuum should ensure no heat will escape through air convection. It is crucial to check to see if the thermos has a reflective lining and a fitting lid, which will help prevent any leakage.

Vacuum technology is most effective at keeping drinks hot or cold for extended periods. The technology in place also means that users can avoid a mess formed from condensation.


Steel, stainless steel or glass are often chosen to make thermoses. These materials are durable and can stand the test of time. High-end thermoses use double-walled vacuum technology, which effectively retains the temperature of the drinks. Some brands even offer lifetime warranties, which shows their confidence in the product's durability.

There are cheaper options made from plastic or tin. But plastic is not the best choice as it can crack easily while it won't retain heat effectively.

The best material for thermos should stay cool when being filled with hot beverages while it should not sweat if filled with cold drinks.

Lid design

Thermoses feature either screw-on or flip-up lids. Both are effective at sealing the container, but screw-on versions are more secure and durable. Ensure that the lid will not easily fall off. It should be easy to clean, and must not leak (which is the case with cork stoppers). The top that also serves as a cup should be made of the same material and retain heat.


Consider what we will use it for and how much coffee we want to keep hot or cold. For example, a medium-sized travel mug would be better for out commute than a full-sized jug. Travel mugs are great for drink holders in cars, while some larger jugs can handle being stored in an office refrigerator.

Think about where we will be using the thermos before buying it. For travel around town,, a travel mug may do the job well. Those who are more active should select a handle-equipped mug rather than an open cup. A right size is crucial to making our thermos portable.

Should you have any questions or request a quotation of Rang Dong products, please send us an email to: export@rangdong.com.vn.

Websites: en.rangdong.com.vn and vacuumflask.rangdong.com.vn.

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