About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

GRASSHOPPER
Thermo drinking can

In our test, the thermal drinking cup from GRASSHOPPER made a very good impression. The thermo mug with integrated straw and mouthpiece guarantees easy and leak-proof drinking. The product has a filling volume of 500 ml. The good insulation of the bottle is also excellent, so drinks stay at the desired temperature for a long time. Another advantage is that the Thermo Mug is leak-proof; in our test, the Thermo Mug did not leak. However, the Thermo Jar is not dishwasher-safe, otherwise the quality suffers. However, this is normal for thermo containers. Unfortunately, the seller’s contact and address details are missing, which would have been desirable.

Advantages

✅ Integrated straw with mouthpiece
✅ 500ml filling volume
✅ leak-proof
✅ Easy and leak-proof drinking
✅ Very good insulation

Disadvantages

❌ Not suitable for dishwashers
❌ no address and contact information

The first impression

Packaging and labeling

ℹ️ 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 ensured.

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingNo unnecessary packaging waste was used, items were packed compactly90 points
Packaging designHigh-quality packaging, also suitable as a gift100 points
Total97 points
Weighting: 10%
*The maximum score is 100 points
Packaging of the Thermo drinking can

The GRASSHOPPER thermo tin arrived in a Deutsche Post shipping box. The box was undamaged and easy to open without any tools. Inside the box, the thermo mug was wrapped in a very thin plastic film. The foil might not have been necessary, but it protects the thermo mug from dirt and scratches! In this case, the product was fully protected and the thermo mug was therefore in perfect condition.
The packaging of the thermo jar is partially recyclable. Unfortunately, the plastic film is not recyclable, but the shipping carton is.
Overall, the GRASSHOPPER thermo mug makes a very good impression. The thermo mug was not damaged and the package was in good condition.

After unpacking

Package contents and instructions

ℹ️ Most people’s first impression after unpacking is immediately memorable. Are the contents of the package complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Package contents & scopeThermo drinking jug with integrated straw and mouthpiece, spare straw and cleaning brush100 points
Instructions for useWritten in German, easy to understand100 points
Contact informationNo address and contact information available20 points
Christmas greetingsincluding a small Christmas greeting100 points
Total80 points
Weighting: 10%
*The maximum score is 100 points

In addition to the thermo can with integrated straw, the product box contained a replacement straw and a cleaning brush. The cleaning brush is suitable for the straws.
The instructions for use and the hazard warnings are printed on the box. This means that no additional material is required for an extra leaflet. The instructions for use are written very clearly in German. There are also additional printed pictures explaining how to use the mouthpiece.
Unfortunately, there is no address or contact information, which would have been desirable. Only the company name is printed on the box.
We also received a spring sponge from GRASSHOPPER as a Christmas present.
All in all, however, we think this is an extremely well thought-out and customer-friendly way of sending a product.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the product processing. How high quality are the materials used? Is the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceHigh-quality appearance100 points
ProcessingVery good workmanship100 points
StabilityStable stand100 points
Sustainability of the productno information on sustainability, due to the high quality we assume a long service life100 points
Total100 points
Weighting: 20%
*The maximum score is 100 points
Thermo drinking can with integrated mouthpiece

The thermal drinking can from GRASSHOPPER makes a very good visual impression. In addition to the simple black design, it has no manufacturing defects. The thermo mug is available in a black or white design. The thermo mug is made of high-quality stainless steel and should therefore not be cleaned in the dishwasher.
The thermo mug has a filling volume of 500 ml.
Another advantage is the low weight of the mug and its sturdy, high-quality finish.
Unfortunately, we cannot find any information about sustainability, but the materials used appear to be of very high quality. Due to the high quality, a long service life can be expected.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test is the most relevant and therefore the most important. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkScore achieved*
UseEasy to use100 points
Insulationkeeps the temperature inside almost constant, even for hours100 points
Leak-proofCompletely leak-proof100 points
Drinking experienceEasy and leak-proof drinking100 points
Cleaningcannot be cleaned in the dishwasher90 points
Total98 points
Weighting: 40%
*The maximum score is 100 points

It’s super easy to use, just fill it with the drink you want, close it and you’re done. Depending on the liquid temperature, you can drink immediately. (Caution with hot drinks)
The GRASSHOPPER thermo mug is suitable for hot, cold and even carbonated drinks.
Even after our test phase of more than 7 hours, the drink was still very warm and hardly lost any temperature. Even chilled drinks are kept cold for a long time.
In our test, the GRASSHOPPER thermal drinking jug is completely leak-proof; no liquid leaked out even when the jug was turned upside down or shaken.
The integrated straw with mouthpiece guarantees easy and leak-proof drinking. This cup can therefore also be used for children without any problems.
Due to the material used, cleaning in the dishwasher is not possible as with other thermal containers. The straw can be cleaned using the cleaning brush supplied.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we look at 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 examine consumer ratings and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioVery good price/performance ratio100 points
Rating cutNot rated, as there are still too few customer reviews– Points
Total100 points
Weighting: 20%
*The maximum score is 100 points

Prices of up to €35.80 are charged on the Internet for equivalent products. Very inexpensive products are available from as little as €9.90. With a price of €19.90, the GRASSHOPPER Thermo Tin is currently in the middle price segment. The price ratio is very good for the quality and scope of services you get.

Overall result

WeightingScore achieved*
1. packaging & labeling10%97 points
2. package contents & instructions10%80 points
3. product processing & appearance20%100 points
4. in the practical test40%98 points
5. price/performance & consumer ratings20%100 points
Total97 points
*The maximum score is 100 points
Thermo drinking can
of the brand
GRASSHOPPER
achieved
97
Points in our test and therefore passed. The test was carried out in the test period
12/22
and is stored in our database under the licence number
221412001
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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