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How to choose a 4-piece hard-shell luggage set without paying for unnecessary extras

A 4-piece hard-shell luggage set can make weekend getaways, family holidays and business trips much simpler. But a complete set isn't always as practical as it seems. A cabin suitcase that's too wide could be refused at the gate, wheels that aren't manoeuvrable enough quickly become a nuisance, and a lightweight shell may lack durability if its design is lacking.

Before comparing a KONO luggage set or any other 4-piece baggage collection, take the time to check the actual dimensions, the empty weight and the storage solutions on offer. Here are the criteria to examine so you can avoid any nasty surprises.

Common pitfalls when buying a luggage set

1. Confusing stated capacity with actual usable space

The dimensions given usually refer to the external measurements and can include the wheels and the telescopic handle. The usable space inside is therefore slightly smaller. A 20-inch suitcase presented as cabin baggage could even exceed an airline's limits once the wheels and handles are taken into account.

When flying, always check the rules of the airline you're travelling with. The permitted dimensions vary depending on your ticket, your route and the carrier. A 20-inch cabin suitcase may be suitable for many airlines, but this indication is no substitute for checking the conditions that apply to your specific booking.

2. Focusing on weight without considering the material

Lightweight ABS suitcases are easier to move around and leave you more room for your belongings. However, weight shouldn't be your only consideration. Also look at the rigidity of the shell, the quality of the zips, the design of the handles and the protection of the corners.

ABS is very common in the world of hard-shell luggage. This material makes it possible to create a lightweight shell that can absorb some of the knocks that come with travel. That said, it won't protect your suitcases against every scratch or bump. A suitable cover and sensible packing are still good precautions.

3. Overlooking the wheels and the locking system

Basic wheels can quickly make moving around stations, hotel corridors or cobbled streets a hassle. Choose a suitcase with 360° wheels, which glides in every direction and is particularly handy in queues or tight spaces.

A TSA lock also proves useful during international travel. Authorised security staff can open the bag using a master key, without having to force the lock. That said, it's not an absolute anti-theft solution: set your own personal code and don't place valuables in a checked bag.

The technical criteria to check before buying

Dimensions and volume distribution

A well-designed set should cover several uses:

  • 20 inches for a short trip or cabin baggage, subject to the airline's rules;
  • 24 inches for a few days or a week away;
  • 28 inches for longer holidays or the belongings of several people;
  • a travel vanity case for toiletries, cosmetics and small accessories.

For the KONO model shown here, the stated volumes are approximately 40 litres for the 20-inch suitcase, 65 litres for the 24-inch and 100 litres for the 28-inch. The beauty case offers around 11 litres. These figures are indicative and may vary depending on the measurement method used.

Empty weight and carrying capacity

The weight of each item directly reduces how much you can take with you, especially by air. For the blue model, the data provided indicates 2.62 kg for the cabin suitcase, 3.18 kg for the medium suitcase, 4 kg for the large suitcase and 0.72 kg for the beauty case.

Before you start packing, add the empty weight of each suitcase to the weight of its contents. The limits for both cabin and checked baggage are set by each airline.

Internal organisation and storage at home

Adjustable cross straps, a zipped divider and a mesh pocket help keep your clothes in place. Thanks to its rear strap, a beauty case can also be attached to the telescopic handle of the suitcase, freeing up a hand when you're on the move.

Nesting suitcases are a real advantage in smaller homes. The different sizes can be stored inside one another when not in use. Before storing them, though, make sure they're completely empty and dry. Also avoid leaving them in direct sunlight for long periods to reduce the risk of discolouration.

Our selection based on your travel profile

Recommended for: Budget-conscious beginners
KONO 4-Piece Hardshell Luggage Set Dark-Beige/Brown

KONO 4-Piece Hard-Shell Luggage Set – Dark Beige/Brown

Why this choice suits this profile: The four pieces cover the needs of a couple or small family, from short breaks to longer holidays. The contrasting colour also makes the suitcase easier to spot on the carousel.

How this product avoids the pitfall

The different sizes mean you don't have to take the large suitcase for every trip. The nesting design also saves space at home.

Main advantage and key features

A four-piece set with an ABS hard shell and a beauty case that attaches to the wheeled suitcase.

Recommended for: Premium enthusiasts
KONO 4-Piece Hardshell Luggage Set Black/Brown

KONO 4-Piece Hard-Shell Luggage Set – Black/Brown

Why this choice suits this profile: Its understated colour works just as well for business trips as it does for international travel, where style and organisation matter as much as capacity.

How this product avoids the pitfall

The separate compartments and internal straps help keep clothes and accessories organised. The multi-directional wheels make changing direction effortless.

Main advantage and key features

TSA combination lock, three-position telescopic handle and four multi-directional wheels.

Recommended for: Specific uses and heavy users
KONO Hard Shell Suitcase Set Blue

KONO Hard-Shell Suitcase Set with TSA Lock – Blue

Why this choice suits this profile: The different volumes let you choose the right bag for the length of your stay. The large suitcase is ideal for longer trips, while the cabin size remains handy for short journeys.

How this product avoids the pitfall

Choosing the right size prevents you from overloading a single suitcase. The zipped internal compartment and cross straps help keep the contents stable during transit.

Main advantage and key features

13, 20, 24 and 28-inch sizes, ABS shell, TSA lock and nesting storage system.

Looking for other options?

We've put together a comprehensive, real-time selection of products that meet these exacting criteria, as well as the applicable European safety regulations.

FAQ about 4-piece hard-shell luggage sets

Is a 4-piece luggage set suitable for air travel?

Yes, provided you choose the right size. The cabin suitcase must comply with the dimensions and weight allowed by the airline. The 24 and 28-inch sizes are generally intended to be checked in. Check the conditions of your ticket before you travel.

How do I set a TSA combination lock?

The relevant models are usually pre-set to '000'. To change the code, hold down the reset button with the tip of a pen or a thin object, choose your combination, then release the button. Test the new code before closing the suitcase for good.

How can I extend the life of my suitcases?

Distribute the weight evenly without straining the zips, avoid pulling the suitcase on two wheels when it's designed to be moved on four, and clean the shell with a soft, slightly damp cloth. Don't use any abrasive products. Before storing your holiday suitcases, let them dry completely and place small accessories in the vanity case to avoid losing them.