Choosing a hard-shell suitcase with a TSA lock: a practical guide for every trip

A hard-shell suitcase with a TSA lock might seem straightforward to choose at first. But suitcases vary considerably in size, materials, wheel design and interior layout. A low price doesn’t tell you much about how easy a case will be to use on a flight, business trip or family holiday.

Look out for these three common pitfalls:

1. Buying a cabin bag without checking the airline’s current size limits. A 20-inch cabin case won’t automatically meet every airline’s requirements. Always check both the dimensions and the maximum weight allowance for your flight.
2. Focusing only on the material. An ABS case may be lightweight, while a polycarbonate or ABS+PC case has different characteristics in terms of flexibility, structure and scratch resistance. Zips, handles and wheels also affect how long a case will last in everyday use.
3. Assuming a TSA lock provides complete protection against theft. A TSA lock is a built-in combination lock that authorised airport staff can open using the TSA system. It won’t stop someone opening the case if they know the combination, and it’s no substitute for taking care with valuables.

Which specifications should you check?

1. Size, capacity and weight

First, think about how you’ll use the suitcase:

• 20 inch: usually suitable as a cabin bag for short trips, depending on the airline.
• 24 inch: suitable for around four to six days, with a capacity of about 58 to 62 litres in many cases.
• 28 inch: designed for longer holidays, family trips or checked baggage. The models listed here have a capacity of around 90 to 94 litres.

A lightweight suitcase can help you stay within your baggage allowance, but don’t look only at its unladen weight. A slightly heavier model might have a sturdier handle, better interior organisation or larger wheels. Dimensions in product descriptions are usually measured externally, so the interior may be a few centimetres smaller.

2. ABS, polycarbonate or ABS+PC

ABS stands for acrylonitrile butadiene styrene. It’s often used for affordable hard-shell suitcases and can keep the unladen weight low. Its properties vary depending on the design and thickness.

A polycarbonate suitcase uses PC for its hard shell. The product information for the NINETYGO models describes a textured, scratch-resistant PC shell. Treat this as a product specification, not a guarantee that the case won’t show signs of use.

An ABS+PC suitcase combines both materials. According to the product information, the Kono models have an ABS+PC shell with a horizontal texture. This could be a good option if you’re looking for a lightweight case with a hard exterior and distinctive finish. Also check whether the case is expandable: according to the description, the expansion zip on the 24- and 28-inch Kono models adds about 5 centimetres to the width.

3. Wheels, handle and interior

A suitcase with spinner wheels moves in multiple directions. Four double 360-degree wheels are handy in stations, airports and narrow hotel corridors. Also look for:

• a telescopic handle with multiple height settings;
• a sturdy top handle and, where available, a side handle;
• a zipped pocket and mesh divider;
• cross-straps to keep clothes in place;
• sturdy zip construction;
• a TSA lock with a combination you can set yourself.

According to the product information, the NINETYGO Rhine 2.0 has a recessed TSA lock, compression straps and a water-resistant PVC zipped pocket, among other features. The stated zip load rating and certification come from the manufacturer’s description; always check the current product page before buying.

Our recommendations for different types of traveller

Suitable for: Budget-conscious first-time buyers

Kono 20 Inch ABS+PC Hard Shell Cabin Suitcase with TSA Lock

Why it suits this type of traveller: According to the product information, this cabin-sized case has a capacity of 37 litres and weighs around 2.46 to 2.5 kg. That makes it suitable for short trips, provided its dimensions meet your airline’s requirements.

How this product helps you avoid the pitfall

The dimensions and weight are clearly listed. Even so, check them against your ticket conditions before you set off.

Key benefit & features

ABS+PC shell, four 360° spinner wheels, telescopic handle and built-in TSA combination lock.

Suitable for: Buyers looking for premium quality

NINETYGO Rhine 2.0 Cabin Suitcase, 20 inch

Why it suits this type of traveller: A practical choice for travellers who like to keep their cabin bag organised. The product information lists a PC shell, double spinner wheels, compression straps and a separate compartment for wet and dry items.

How this product helps you avoid the pitfall

The recessed components reduce the number of parts that stick out. The listed interior compartments help keep electronics, clothes and accessories separate.

Key benefit & features

PC shell, 360° wheels, TSA lock and a flat top handle, according to the product description.

Suitable for: Specific needs & frequent travellers

Kono 28 Inch Expandable ABS+PC Hard Shell Large Suitcase

Why it suits this type of traveller: The 28-inch version is designed for longer holidays and checked baggage. According to the product information, it has a capacity of 90.3 litres, while the expansion zip gives you extra room when you need it.

How this product helps you avoid the pitfall

The fixed capacity and extra expandable space give you more flexibility when packing for a trip. Just remember to check the maximum baggage weight.

Key benefit & features

90.3 litres of capacity, around 5 centimetres of extra width, ABS+PC shell, double spinner wheels and TSA lock.

Frequently asked questions about hard-shell suitcases with TSA locks

Is a TSA lock compulsory for travel?

No. A TSA lock is generally not compulsory. It can be useful if you’re travelling to or via a destination where airport security staff need to be able to open suitcases. Always use a personal combination and don’t keep it with your case.

How do I set a TSA combination lock?

According to the product information, the factory setting on the models listed is 000. Open the lock, press the reset button with a pointed object, choose a new combination, then slide or release the reset button until it clicks into place. Check the new combination before closing your suitcase.

How long does a hard-shell suitcase last?

Its lifespan depends on how much you pack, how it’s transported, the surfaces it’s used on, and how the wheels and zips are treated. A hard shell can withstand everyday knocks, but it isn’t indestructible. Avoid putting too much strain on the handle and wheels, pack fragile items carefully and clean the exterior with a soft, damp cloth. Also check the airline’s rules and the dimensions on the current product page before every trip.