An underseater is the smart way to travel light. No queue at the check-in desk, no waiting at the baggage carousel, and no unexpected costs at the gate. Frenky’s 40x30x20 hand luggage is designed to fit under the seat on most airlines. Thanks to the built-in vacuum function, you can pack surprisingly much into a compact size. Explore all underseaters and choose the bag that fits your trip.

Underseater luggage 40x30x20: compact, spacious and always with you

An underseater is the cabin bag you can take on board as your personal item. The 40x30x20 cm size is compact enough to meet the baggage rules of many European airlines, while still giving you the space you need for a short trip. At Frenky, the idea is simple: less hassle, more packing space. Browse the collection and find the underseater that suits your travel style.

What is an underseater?

An underseater is a compact bag, backpack or trolley that fits under the seat in front of you on the plane. Many airlines, including Ryanair, easyJet and Transavia, allow passengers to bring one personal item on board for free. This item needs to fit under the seat, often in a size close to 40x30x20 cm.

The biggest advantage is simple: you avoid extra baggage fees. You can walk straight to the gate, board with less stress and leave the airport faster after landing.

An underseater is not the same as a larger cabin bag. A larger cabin bag usually goes in the overhead locker and often costs extra. An underseater is the smart, compact alternative.

Why choose 40x30x20 hand luggage?

The 40x30x20 size is a smart choice for air travel. It fits within the personal item rules of many European low-cost airlines. That means less chance of extra baggage charges, no need to check in a suitcase and no waiting at the baggage carousel.

For weekend trips, city breaks and business flights, this size is ideal. You have enough room for clothes for two to four days, a laptop or tablet, toiletries and your travel essentials.

Thanks to Frenky’s vacuum function, you can pack smarter than you think. The compression system makes your clothes flatter, so you can fit more into your bag without increasing its size.

Does an underseater really fit under the airplane seat?

Yes, as long as you choose the right bag. The 40x30x20 cm size is commonly used as a guideline for personal items that fit under the seat. In practice, the exact space can vary depending on the airline and aircraft type.

Frenky bags are not only compact in size, but also designed with flexible materials. This makes them easier to slide under the seat, even when space is limited.

Tip: avoid overpacking your bag. A slightly flexible underseater is easier to fit under the seat and gives you less stress at the gate.

FRENKY's vacuum function: pack more in less space

The difference between a regular compact bag and a Frenky underseater is the vacuum function. Clothes that normally take up a lot of room can be compressed, creating extra space for the things you would otherwise leave at home.

The result is a 40x30x20 cm bag that feels much roomier than expected. You travel compact, but you do not have to compromise as much on what you bring.

What kind of trips is an underseater best for?

An underseater is perfect when you want to travel light and avoid extra baggage. It works especially well for short trips where you do not need a large suitcase.

City trips and weekends away

For two to four days, an underseater gives you enough room for outfits, toiletries and travel essentials. It is compact, easy to carry and ideal for quick getaways.

Business travel

Bring your laptop, a few shirts, toiletries and daily essentials. You move through the airport quickly, work during the flight and leave immediately after landing.

Flights with strict baggage rules

Airlines such as Ryanair, Wizz Air and other low-cost carriers often charge extra for larger cabin bags. A 40x30x20 underseater helps you travel without unnecessary baggage costs.

Backpack or trolley: which underseater suits you?

Frenky offers underseaters in two practical styles: backpacks and trolleys. Both are designed around the 40x30x20 size and both include the vacuum function.

A 40x30x20 backpack is easy to carry on your back, which is useful if you walk a lot or want to keep your hands free. A cabin trolley is easy to roll through the airport, especially across long terminals and smooth airport floors. Both are smart choices. The best option depends on how you like to travel.

Explore the Frenky underseater collection

All Frenky underseaters are designed to respect the baggage rules of many airlines while giving you as much packing space as possible. Compact on the outside, surprisingly spacious on the inside.

Choose the bag that fits your travel habits and board your next flight without paying extra for baggage.