Rang Dong’s 250-ml Vacuum Flask Raises User Convenience

8월 16일, 2025

In today’s fast-paced lifestyle, a reliable and compact thermos is essential for keeping beverages at the perfect temperature throughout the day. Rang Dong, Vietnam’s leading manufacturer of vacuum flasks, introduces the RD-02540N1 – a 250-ml vacuum flask that blends portability with premium heat retention. The model is ideal for those who are always on the go and appreciate smart, functional design.   

Model RD-02540N1 is crafted with portability and functionality in mind. It features a smooth and glossy finish, made from high-quality polypropylene plastic that ensures both durability and visual appeal. 

With a compact size, the 250-ml vacuum flask is ideal for single-serving hydration needs. Measuring 83.6 mm in diameter, 187 mm in height, and weighing 250 grams, the lightweight flask can be easily taken along. 

 
Structures of Rang Dong’s 250ml vacuum flask, model RD-02540N. 

The interior is equipped with a premium glass refill manufactured using Japanese technology, which delivers outstanding thermal insulation.  

Certified under LFGB and SVHC standards, it’s safe for storing either hot or cold beverages. The flask retains heat for up to 12 hours and keeps drinks cold for 24 hours, making it a reliable companion in any season. 

Exceptional features 

What makes Rang dong’s 250-ml vacuum flask stand out is its thoughtfully engineered design tailored for convenience.  

The screw-on lid not only provides a leak-proof seal, but can also be used as a drinking cup, which comes handy for outdoor or office use.    

 

The flask features a tightly sealed lid that is easy to open and close, preventing any risk of spills. 

The flask includes a built-in straw and a user-friendly push-button spout that enables easy, controlled pouring with just one hand.  

Its wide 40-mm mouth allows for effortless filling and cleaning.  

The TPE silicone gasket enhances sealing performance and prevents leaks during travel. 

The anti-slip bottom provides stable placement on surfaces, and the overall ergonomic shape fits comfortably in the hand or side pocket of our bag. 

Each element of the flask, from the reliable lid to the premium glass core, is meticulously selected to guarantee durability, safety and ease of use. 

Applications 

This 250-ml vacuum flask can meet a wide range of daily activities. It’s an ideal choice for professionals commuting to work, students attending classes, or parents preparing drinks for their children.  

 

The smart spout design allows users to get the drinks without having to fully open the lid. 

Its compact size makes the flask perfect for portion-controlled hydration or carrying our favorite hot tea, herbal infusion or iced coffee wherever we go.  

It’s equally effective for indoor use and outdoor settings such as hiking, cycling, or picnics.  

The spill-proof design and reliable insulation keep every sip fresh as if the drink was just completed. Whether people need a compact solution for hot drinks in cold mornings or chilled refreshment for sunny afternoons, Rang Dong’s 250-ml vacuum flask meets the need with style and practicality. 

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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