Buying the ideal thermos or thermos cup
Choosing the best thermos or thermos cup.
Thermos flasks and thermos cups come in many brands such as Retulp, Dopper, Mepal and Klean Kanteen. The differences are mainly in the material, insulation and ease of use. Which one is best? When taking a walk through the winter cold, a cup of hot and steaming coffee or tea is a wonderful reward. With a thermos you always have hot beverage with you. But what should you look for when you want to buy a good and convenient thermos?
How does a thermos or thermos cup work?
A thermos or thermos cup keeps drinks hot or cold because of its double-walled stainless steel construction. There is a vacuum between the inner wall and outer wall, so heat can barely escape. This keeps your coffee or tea at temperature much longer than in a single-walled bottle or plastic mug. This insulation works both ways: hot drinks stay warm, cold drinks stay cool. The temperature from outside hardly reaches the inside of the thermos cups, even if the bottle is in the sun or, on the contrary, in a cold bag. This technology allows you to use a thermos for coffee, tea, soup, water or cold drinks. This makes a thermos or thermos cup a practical choice for work, school, hiking, sports or travel.
Best material for a thermos: stainless steel, glass or plastic?
The material largely determines how well a thermos bottle performs and how long it lasts. Stainless steel (SS) is the best choice here. Stainless steel is strong, durable and more resistant to impact than glass or plastic. The material retains heat and cold longer and continues to perform well even after frequent use. In addition, stainless steel is hygienic because it does not retain odors, flavors or bacteria. You can easily clean the bottle, making the material suitable for everyday use. Plastic thermos bottles are lighter, but do not insulate as well and can absorb odors faster. They are also more susceptible to scratches and wear and tear. Glass, while giving a neutral taste, is fragile and less suitable for travel. That's why brands such as Retulp and Dopper almost always use stainless steel for their thermos, travel mugs and coffee cups. The material remains reliable in summer and winter and can withstand temperature changes.
A large or small thermos cup? Thermos flask 500 ml to 1 liter.
Thermos bottles come in a variety of sizes. The larger the bottle, the more weight you have to carry. Buy a bottle with a capacity that is just enough for you. Of course, this depends on how long you will be hiking and how many people will be using the thermos. For a short train ride, a 350 ml thermos cup is usually sufficient and they come in many brands such as, for example: Mepal, Dopper, Retulp, Mizu and Klean Kanteen. For a long mountain trek, for example, choose the XL 1200 ml Adventure thermos from Retulp Or a large thermos of Contigo. The most common size is a 500 ml bottle. For short trips, a 350 ml thermos cup is ideal, such as those from brands like Dopper, Mepal or Retulp.
Twist cap, push button or drinking spout - which is most practical for a thermos?
Of course, the water bottle must not leak. Nothing more annoying than coffee or tea among the stuff in your bag. Furthermore, ease of use is also an aspect to consider when buying. There are thermos bottles with a twist cap or with a push button. During a test of thermos flasks by the TV program Kassa a few years ago, it turned out that the traditional twist-top insulates better than the push-button. A push button, on the other hand, is more practical to use because you don't have to hold a loose cap while pouring. Just make sure the drink in the bottle is not too hot. A good example of a push-button drinking bottle is the Click&Go Thermos Cup.
Cheap or expensive thermos bottles? Price, quality and difference
There are considerable price differences between thermos flasks: you can already have a thermos for less than 10 euros, while the most expensive ones cost around 70 euros. At Retulp there are many different types of possible thermos cups and thermos bottles in the web shop. The price of a thermos is determined by the size and functionality of the bottle. In general, branded A-brands such as Mizu, 24bottles, Retulp, Chillies and Dopper are a bit more expensive than unbranded thermos bottles. These brands often use better stainless steel and insulation, so they keep hot longer and are more durable.
Test results and reviews of thermos flasks and thermos cups.
All sorts of research and testing has been done on thermos flasks, and travel mugs. Some tests focus on ease of use, othersn on durability and in some tests again considering the method of cleaning. Hhe is difficult to name the best tested cup or drinking bottle. In general, the Dutch brands Dopper, Mepal and Retulp and the foreign brands Contigo, Kambukka and Camelbag very good.
Stainless steel thermos cups from Retulp printing
When searching for the ideal thermos or thermos cup for travel, Retulp is here for you. We stand for durability, ease of use and style. Made of high-quality stainless steel, we offer excellent insulation for both hot and cold beverages and are designed with comfort and leak-free convenience in mind. Every product from Retulp also supports a more sustainable world by contributing to reduced plastic use. Explore the possibilities and make the switch to a conscious choice!
Frequently asked questions about thermos flasks and thermos cups:
How do you prevent a thermos from smelling?
Rinse the thermos immediately after use and always let the inside dry thoroughly. Stubborn odors can be removed with warm water and a little baking soda. Regular cleaning prevents odor and taste build-up.
Why does my thermos cool down faster than expected?
A thermos cools down faster if the bottle is not preheated beforehand, the cap does not seal properly or the bottle is not fully filled. Damage to the inner wall can also reduce insulation.
Can a thermos bottle go in the dishwasher?
Most stainless steel thermos bottles can go in the dishwasher, but hand washing remains better for the coating and insulation. Always check the product information. Caps are usually not dishwasher safe.
Why do some thermos bottles keep hot longer than others?
The difference is in the quality of the vacuum, the thickness of the inner wall and the seal of the cap. Stainless steel models with good insulation perform best.
How do I best fill a thermos for maximum heat?
First, fill the thermos with boiling water to preheat. Pour this away and immediately fill the bottle with the hot beverage. The fuller the bottle, the longer the heat will be retained.
Is a thermos suitable for iced coffee, cold tea or infused water?
Yes. A stainless steel thermos is suitable for cold drinks such as iced coffee, cold brew, chilled tea and water with fruit. The insulation often keeps cold drinks cool longer than hot drinks warm.
Why is a stainless steel inner wall better than a coated inner wall?
A stainless steel inner wall is more durable, more resistant to impact and remains odorless. Coated inner walls can wear out or retain odor.
Can a thermos handle carbonated beverages?
This is not recommended. Carbon dioxide builds up pressure and can cause the cap to leak or open. Choose water or non-carbonated beverages for safe use.
What is the difference between a thermos and an insulated cup?
A thermos is fully sealable and meant to keep hot or cold for longer. An insulated cup usually has a drinking opening and is more practical on the go, but does not keep hot for as long.
Can you use a thermos for soup or hot meals?
Yes. Many thermos bottles are suitable for soup, broth or hot meals. Preferably use a model with a wide opening for easier filling and cleaning.