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.

Wilford & Sons
Thermos flask with sieve insert

The thermos flask with strainer insert from Wilford & Sons made a very good impression during our test. Made from robust, brushed 18/8 stainless steel , it demonstrated impressive insulation performance. The two-part strainer insert proved to be extremely practical for tea, fruit or fruit spritzers. However, a larger strainer insert would be desirable, as its size means there is only limited space for fruit. The 450 ml bottle is easy to open and close, and the extra wide neck makes filling and cleaning much easier. The leak-proof design guaranteed safe transport in the test, the stainless steel is tasteless and odourless and free from BPA and phthalates. The thermos flask is supplied in environmentally friendly packaging, which emphasises Wilford & Sons’ sustainable approach. If you have any questions or problems, the German-speaking 24/7 support team is always on hand to offer quick solutions.

Overall, the thermos flask from Wilford & Sons impressed in the test with its high quality, functionality and suitability for everyday use.

  • Outstanding insulation performance
  • Two-part strainer insert
  • Very good handling
  • Leak-proof construction
  • 24/7 support
  • Sieve insert could be larger for fruit
  • Not dishwasher-safe

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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Product protection

Carton is sturdy, product sufficiently protected

100

Points

Sustainability Packaging

No unnecessary packaging waste, beautiful, sustainably designed packaging

100

Points

Package contents & scope

Complete

100

Points

Instructions for use

Product is self-explanatory

100

Points

TOTAL

100

Points

Weighting: 20%
*Themaximum score is 100 points

The packaging of the thermos flask is very attractively designed and can also be used as a gift box thanks to its design. It is made exclusively from recyclable and renewable materials such as paper and cardboard and is compact, which helps to minimise waste and avoid unnecessary packaging material. The contents of the packaging are complete and in good condition. Due to its easy handling, there is no need for instructions for use.

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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Visual appearance

Attractive design, available in black, cream white and pink

100

Points

Processing

Very good workmanship

100

Points

Stability

Very stable

100

Points

Sustainability of the product

Partner of the Eden Reforestation Project

100

Points

TOTAL

100

Points

Weighting: 20%
*Themaximum score is 100 points

The thermos flask from Wilford & Sons is characterised by its elegant design and high-quality finish in brushed 18/8 stainless steel. The lid closes precisely for easy handling. The well-designed strainer insert is easy to remove and facilitates the preparation of tea, fruit or fruit spritzers. Particularly noteworthy is the robust construction, which ensures excellent stability and makes the bottle ideal for safe transport . Wilford & Sons has already planted over 100,000 trees in collaboration with the Eden Reforestation Project, underlining their commitment to sustainability. The durable finish and versatility of use make the thermos bottle a reliable everyday companion.

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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Thermal insulation

Keeps drinks warm for 12 hours and cold for 24 hours

100

Points

Functionality of the sieve

High-quality 2-part sieve insert

90

Points

Handling and ergonomics

Pleasant to hold, easy to open and close

100

Points

Lid closure safety

Very leak-proof

100

Points

Cleaning

Easy to clean, not dishwasher-safe

90

Points

TOTAL

96

Points

Weighting: 45%
*Themaximum score is 100 points

In our practical test, we put the thermos flask from Wilford & Sons through its paces. Starting with the impressive thermal insulation, the flask proved to be extremely reliable: it keeps both hot and cold drinks at the desired temperature over a long period of time, which is particularly practical in everyday life and when travelling. The two-part strainer insert proves to be practical when preparing tea and small pieces of fruit, but reaches its limits with larger pieces of fruit. The attached handle makes it easy to remove the strainer and change the contents. The thermos jug is very convenient to use. The generous bottle neck makes filling and pouring effortless, while the ergonomic design ensures a pleasant feel and easy transport. The lid closes precisely and securely even when subjected to strong vibrations or in an inverted position, which emphasises the bottle’s tightness. Cleaning is uncomplicated overall, although the bottle is not suitable for the dishwasher. However, thanks to the smooth inner surface, the thermos flask can be easily cleaned by hand without leaving any residue or unpleasant odours behind.

To summarise, the thermos jug impresses with its excellent thermal insulation, convenient handling and ergonomics as well as reliable closure security.

Test plan of the Prüfengel Institute

A detailed insight into the evaluation criteria of the practical part of the test and the distribution of points can be found 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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Price / performance ratio

Very good performance in the lower price segment

90

Points

Rating cut

4.6 out of 5.0 on Amazon

80

Points

TOTAL

85

Points

Weighting: 15%
*Themaximum score is 100 points

On the Amazon platform, consumers rate the product with an average of 4.6 stars. Some criticise the fact that the product is not dishwasher-safe and that the coating sometimes peels off early. On the other hand, the elegant and functional design, the tightness and the excellent insulation are positively emphasised. In our practical test, we were able to confirm that the drinks stay hot or cold for a very long time, handling is very easy and pleasant and we were impressed by the design.

Prices of up to €50.85 are charged on the Internet for equivalent products. Very cheap products are available from as little as €21.93 . The thermos flask with strainer insert from Wilford & Sons is currently priced at €26.99, which puts it in the lower price segment. For the quality and performance received, the price-performance ratio is very good.

Overall result

1. packaging & contents

20%

100

Points

2. product processing & appearance

20%

100

Points

3. in the practical test

45%

96

Points

4. price/performance & consumer reviews

15%

85

Points

TOTAL

96

Points

*Themaximum score is 100 points

Thermos flask with sieve insert
 of the brand 
Wilford & Sons
achieved
96
Points in our test and therefore passed. The test was carried out in the test period
07/24
and is stored in our database under the licence number
240619007
. 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 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.

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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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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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