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 any material, long-term or laboratory tests. The tests are carried out by 1-2 independent consumers over a period of 7-14 days. The exact test conditions can be viewed in the test plan of the respective test report – click here to go directly to the test plan.

Manufacturers provide the tested products free of charge. We charge a one-off test fee for carrying out the tests. In addition, manufacturers pay an annual licence fee for the use of the Prüfengel seal. We also receive a commission for linking to manufacturers’ websites. These remunerations have no influence on our test results or ratings.

We guarantee transparency and a fair evaluation. For a detailed insight into our comprehensive evaluation process, please click here.

4FLY
Travel suitcase

Manufacturer’s product description

Anyone planning longer trips or regularly flying with checked luggage needs a suitcase that is both spacious and durable. The 4FLY CoreMatte hard-shell suitcase in size XL (28 inches) is designed specifically for this target group.
With its robust polypropylene (PP) hard shell, it is designed to reliably protect the contents from impacts and external influences while also impressing with its lightweight construction. Equipped with four 360° dual-wheel spinners, a multi-stage telescoping handle, and an integrated TSA combination lock, the suitcase offers all the classic features required for air travel. The matte finish ensures a simple, timeless design suitable for both vacation and business travel.

Our test aimed to determine whether the material quality, workmanship, and practicality meet the demands of everyday travel—particularly in terms of stability, rolling performance, interior layout, and security features.

  • Quiet and smooth-rolling casters
  • Durable
  • Convenient protective cover
  • Various sizes and colors
  • No sustainability information provided

First impression

Packaging and contents

Here, we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, of course, adequate protection of the product must be ensured. Is the contents of the package complete, and does the manufacturer make it as easy as possible for me to use the product right away?

Here, we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, of course, adequate protection of the product must be ensured. Is the contents of the package complete, and does the manufacturer make it as easy as possible for me to use the product right away?

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Product protection

Box is sturdy, product is adequately protected

100

Points

Sustainability of packaging

Unnecessary packaging waste has been eliminated; the plastic film protects the product components

90

Points

Package contents & scope

Complete, including protective sleeve

100

Points

Instructions

Product is self-explanatory

100

Points

OVERALL

98

Points

Weighting: 20%
*The maximum score is 100 points

The 4FLY hard-shell case comes in a sturdy cardboard box that reliably protects the product. A particularly positive feature is that sensitive parts such as wheels and handles are additionally wrapped in plastic to prevent damage during transport. Another thoughtful detail: The case comes with a reusable fabric protective cover, which reduces packaging waste overall while offering practical added value.
The contents arrived complete and undamaged. In addition to the suitcase itself, the protective cover is included in the package. There is no traditional instruction manual, but this is not a drawback—all relevant information is listed on the outside of the box as well as on a small information card inside the suitcase. Additionally, a card with the customer service contact address is included, which leaves a professional impression.
Overall, the packaging concept impresses with a good balance between protection and sustainability. No superfluous inserts, no unnecessary plastic elements—instead, a sensibly protected product with a practical additional cover. The first impression is thoroughly positive and conveys quality and care on the part of the manufacturer.

First time in hand

Product build quality and appearance

Before moving on to the practical test, we take a close look at the product’s workmanship. How high-quality are the materials used? Are the feel and appearance satisfactory?

Before putting it through practical testing, we take a close look at the product’s build quality. How high-quality are the materials used? Are the feel and appearance satisfactory?

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Visual appearance

Simple and appealing design

100

Points

Workmanship

Very good workmanship, no visible defects

100

Points

Stability

Very stable

100

Points

Product sustainability

No information

70

Points

OVERALL

93

Points

Weighting: 20%
*The maximum score is 100 points

Visually, the 4FLY CoreMatte suitcase features a simple, understated design. In our test, we have the black version in size XL (28 inches). The suitcase is also available in other colors, catering to individual preferences. The matte finish looks modern and understated—a sensible choice for frequent travelers, as minor signs of wear are less noticeable.
The build quality is impressive at first glance. The polypropylene hard shell feels sturdy yet slightly flexible—a good sign of impact resistance. Zippers glide smoothly and cleanly, without snagging or offering resistance. There are no dents, open seams, or other manufacturing defects visible.
The telescoping handle feels sturdy, and the wheels are also securely mounted. Overall, it gives the impression of a solid, durable travel companion. While the manufacturer does not provide information on the sustainability of production or transport, the suitcase’s long-term reusability suggests a certain level of resource conservation. Nevertheless, further information on the origin of the materials would be desirable.
All in all, the suitcase impresses with its high-quality feel, clean workmanship, and timeless look.

Here are the results of our hands-on test

Does the manufacturer live up to its advertising claims?

Our practical test carries the highest weighting. Here, the product must undergo a wide variety of criteria and tests. We evaluate the functions and product claims of the test item.

Our practical test carries the highest weighting. Here, the product must undergo a wide variety of criteria and tests. We verify the functions and product claims of the test item.

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Grip stability

Very good stability, telescoping handle with multiple settings

100

Points

Casters

Rubber-coated, 360° swivel, quiet and smooth-rolling

100

Points

InteriorLayout

Well-designed and practical for everyday use

100

Points

LockFunctionality

TSA combination lock for security and convenience

100

Points

Materialflexibility

Minor impacts are absorbed

100

Points

OVERALL

100

Points

Weighting: 45%
*The maximum score is 100 points

In practical testing, the 4FLY hard-shell suitcase delivered a very impressive performance. The telescoping handle extends effortlessly and in increments. The mechanism operates smoothly, without catching or wobbling. Even when fully loaded, the handle remains stable and offers comfortable handling.
The four 360° double wheels feature a rubberized surface and enable quiet, low-resistance rolling. Even when fully loaded, the suitcase remains agile and can be easily maneuvered in all directions—both on smooth floors and on slightly uneven surfaces.
The interior is thoughtfully designed. The suitcase opens in the middle and features a sturdy compression strap on one side to secure clothing, while the other side is separated by a zippered compartment. Additional mesh pockets provide space for smaller items and help keep things organized.
The integrated TSA combination lock worked reliably in testing and repeatedly without any issues. It offers additional security for air travel and allows for hassle-free security checks without damage.
The suitcase demonstrated a pleasant flexibility in its material. This is highly desirable for everyday travel, as minor impacts are better absorbed than with rigid suitcases. Overall, the suitcase impressed with its sturdiness, comfort, and well-thought-out features—a reliable companion for longer trips.

Test Plan

You can find a detailed overview of the evaluation criteria for the practical part of the test as well as the point distribution here. If you are also interested in the evaluation of our other test criteria, please read our document on the evaluation process.

Value for money

Finally, we examine how the product compares to the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend purchasing it?

Finally, we examine how the product stacks up against the competition. Can it compete with the competition in terms of price and quality? Would we generally recommend purchasing it?

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Value for money

Very good performance in the mid-price range

80

Points

TOTAL

80

Points

Weighting: 15%
*The maximum score is 100 points

Prices of up to€149.99are listed online for comparable products. Very affordable products areavailable starting at €49.99.The4FLYsuitcase is currently priced at€89.99,placing it inthe mid-range price segment.
The value for money is rated as very good. This rating takes into account both the high quality and performance as well as the mid-range price, resulting in a very good overall value.

Overall result

1. Packaging & Contents

20%

98

Points

2. Product Workmanship & Appearance

20%

93

Points

3. In practical testing

45%

100

Points

4. Value for money

15%

80

Points

TOTAL

95

Points

*The maximum score is 100 points

Travel suitcase
 of the brand 
4FLY
achieved
95
Points in our test and therefore passed. The test was carried out in the test period
02/26
and is stored in our database under the licence number
260209001
. 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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