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Tips on Choosing Best Hot Water Flask

A diversity of water flasks has been made available in the market, helping effectively store liquid and retain the flavor. Hot water flask does not only leave impacts on our health, for which we need to take caution when choosing, but also on the environment as we fight against the use of plastic bottles.

Types of hot water flasks

Customers nowadays have a wide choice of types, materials, and features of a hot water flask. Let’s take a look at what is on offer now.

  • Glass bottle: High-quality glass, safe for health, stable force and heat resistance, modern design, no odors when storing fruit, milk, coffee, tea. However the price is usually high.
  • Stainless steel bottle: Glossy painted outer surface, often insulated inside. Safe for health, good smell resistance, easy to clean. The price is also high for this option.
  • Plastic bottle: This is the cheapest one, and is made from high-quality plastic such as PET, PETE, HDPE, LDPE or PP. Safe for health.

What should we pick?  

There are many kinds of cheap water bottle on the market, so to choose the best product, users need to base on several criteria.

Material of hot water flask

Water bottles are commonly produced from high-quality hard plastic, glass or stainless steel with powder coating. The different characteristics are meant for different use efficiency:

  • Plastic water bottles: Cheap, light, compact, convenient, many models to choose. However, the durability and ability to retain heat are not appreciated, often not used to store hot water. After a while using time, the color turns yellowish, scratches appear and it’s difficult to clean.

Sample of a plastic water bottle.

  • Glass bottle: The price is usually higher than that of the plastic one, safe for health, easy to clean, no odors, high aesthetics, stable heat resistance. Handle with care. The glass material is safe for food and drink. Hence, glass flasks have been used for hot for many years.

Samples of glass vacuum flasks.

  • Stainless steel water bottle: High price, good heat resistant and heat retention, easy to clean, no odors, nice aesthetics, its durability is higher than the above two types mentioned earlier. There are many requirements for the production of a steel or plastic item as manufacturers need to meet food safety standards. Therefore, the price of these products is often higher than the glass type.

Hot water flask check

The models and designs of water bottles are quite diverse, users choose the product in line with their preferences. Preferred features would include elegant designs, transparent glass for office workers, or patterns printed with funny pictures, cute designs and eye-catching for children. But it should be noted that the material should be safe and does not affect the water quality.

Volume check

Based on the volume of water in storage needed for carrying out, users choose the appropriate capacity. Usually 0.8 to 1.2 liters is just right for the need of water and convenient to take along.

For home use, the bottle should have larger volume, ranging from 1.5 to 2.5 liters. For special uses such as storing tea or coffee, a smaller capacity of less than 500 ml should be sufficient.

Cap design

A water bottle with a sturdy screw cap design should be chosen to ensure no leakage. Some models have the cap that can be flipped, with a nozzle to adjust the water outflow.

Some large cap designs can be used as drinking cups, enabling the sharing among users.


While choosing an individual water bottle, users need to pay attention to the characteristics of the attached hook strap for convenience in carrying.


A customized water bottle.

Trusted Brand

Water bottle brands are diverse, with many options for users. Products sold on the market without a clear origin will make it difficult to control the quality and impact on user’s health.

It is highly recommended to choose a reputable brand, with quality certificates, ensuring safety for users, with the information about the material, toxicity and recommended use fully provided.

Customers may want to consider Rang Dong, one of Vietnam’s best brands for glass hot water flasks.

Should you have any questions, wish to share your ideas about vacuum flasks or request a quotation, please send us an email to: export@rangdong.com.vn.

Our website: vacuumflask.rangdong.com.vn

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