Test result preview
Product description of the manufacturer
The GRINSEZWERGE children’s thermo mug is a stainless steel thermo container specially developed for children, designed to keep food and drinks warm or cold for longer periods of time. With a capacity of 500 ml, it is ideal for transporting baby porridge, muesli, yoghurt or other meals on the go. Thanks to the innovative stainless steel vacuum insulation, the manufacturer promises a heat retention time of up to ten hours and a cold retention time of up to fourteen hours.
A special feature is the child-friendly design with motifs such as unicorns or firemen, which is specially tailored to the preferences of the little ones. However, it would be desirable if the thermo mug were available in different sizes to meet the different needs of the users.
Advantages
- Long insulation performance: keeps food warm for up to ten hours or cold for fourteen hours
- Child-friendly design: attractive motifs such as a unicorn or a fireman
- Versatile use: Suitable for baby porridge, muesli, yoghurt and more
Disadvantages
- Limited size options: Only available with 500 ml capacity
The first impression
Packaging and contents
Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?
Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?
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Remark
Score achieved*
Product protection
Product is adequately protected by packaging
Points
Sustainability Packaging
Unnecessary packaging waste has been avoided, the plastic film protects the product components
Points
Package contents & scope
Complete
Points
Instructions for use
Instructions and care tips are printed on the packaging
Points
TOTAL
98
Points
Weighting: 20%
*Themaximum score is 100 points
The GRINSEZWERGE children’s thermo mug comes in sturdy and attractively designed packaging that reflects the chosen motif of the mug. The packaging is tailored to the product size and does not use any superfluous material, which emphasises the company’s sustainable approach. When unpacking, it is noticeable that the thermo mug is additionally protected from scratches or soiling during transport by a protective film. From a sustainability perspective, it would be nice to do without plastic completely. However, from an environmental point of view, the use of plastic film could be reduced or replaced by alternative materials. The scope of delivery includes the thermo mug itself as well as a practical spoon and a sealing ring, and the handling and care of the product is explained on the packaging.

The first time in your hand
Product processing and appearance
Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?
Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?
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Remark
Score achieved*
Visual appearance
Attractive, child-friendly design
Points
Processing
Very good workmanship
Points
Stability
Very stable due to the use of stainless steel
Points
Sustainability of the product
Not specified
Points
TOTAL
98
Points
Weighting: 20%
*Themaximum score is 100 points

The thermo mug impresses with its friendly and child-friendly design, which goes down well with children. The choice of colours and motifs – such as unicorn or fireman – are lovingly designed and appeal specifically to young users. The workmanship is high quality; there are no visible sharp edges or production faults. The mug appears robust and stable overall, which indicates a long service life. Even with frequent everyday use, the thermo mug is resistant to knocks and scratches. One particularly positive aspect to emphasise is that the product is BPA-free – an important criterion for health-conscious parents. Although there is no further information on the general sustainability of production, the use of stainless steel and the solid workmanship suggest that the thermo mug has been designed for long-term use.
This is what our practical test showed
Does the manufacturer keep its advertising promises?
Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.
Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.
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Remark
Score achieved*
Tightness
The thermo mug remains leak-proof even with intensive shaking
Points
Heat storage
The mug keeps warm for a long time as promised by the manufacturer
Points
Cleaning
The product is quick and easy to clean
Points
Flavour neutrality
In the test, we could not detect any taste or odour of the thermo mug
Points
Locking mechanism
Opening and closing the product works perfectly
Points
TOTAL
100
Points
Weighting: 45%
*Themaximum score is 100 points
In practical use, the GRINSEZWERGE children’s thermo mug impressed across the board. In the leak test, the cup proved to be absolutely leak-proof. Even with vigorous shaking and dynamic movement, the contents remained completely inside – no leaks could be detected at either the drinking opening or the screw cap. The thermo mug also met expectations in terms of heat retention: Liquids filled in hot kept their temperature over a longer period of time, making the product ideal for hot meals or drinks on the go. Cleaning also proved to be easy – even after being filled with strongly coloured liquids, the mug was completely free of residue and left a hygienically perfect impression. In terms of flavour neutrality, there was no noticeable difference to freshly poured water – a sign of the high-quality choice of material. The closure mechanism was also convincing with its stable, smooth handling and reliable functionality. Overall, the thermo mug proved to be a well thought-out, reliable product for children that is suitable for everyday use.

Test plan
You can find a detailed insight into the evaluation criteria of the practical part of the test and the distribution of points here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.
Price/performance ratio
and ratings from consumers
Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.
Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.
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Remark
Score achieved*
Price / performance ratio
Very good performance in the lower price segment
Points
TOTAL
90
Points
Weighting: 15%
*Themaximum score is 100 points
Prices of up to €30.99 are charged on the Internet for equivalent products. Very cheap products are available from as little as €15.97 . The Grinsezwerge thermo mug is therefore currently in the lower price segment with a current price of €19.90. For the quality and performance received, the price-performance ratio is very good.
Overall result
Weighting
Score achieved*
1. packaging & contents
20%
Points
2. product processing & appearance
20%
Points
3. in the practical test
45%
Points
4. price/performance & consumer reviews
15%
Points
TOTAL
Points
*Themaximum score is 100 points