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By the Joybuy Product Recommendation Officer, July 21, 2026
Modern life demands flexibility—and that extends to the bag you carry every day. One day, a slim backpack for your laptop and notebook is all you need; the next, you require extra space for gym clothes or groceries. For a short business trip, you might even need to pack for one or two nights. An expandable laptop backpack is a functional solution for these changing needs.
This article serves as a guide to help you make an informed choice. It outlines objective criteria to consider when selecting a backpack and presents a curated selection of models with different specialities to simplify your decision.
To find the right model, several functional aspects should be considered. These criteria will help you objectively evaluate a backpack's features.
The core feature is its variable capacity. Pay attention to the base volume for daily use and the maximum volume after expansion. A typical travel backpack with a laptop compartment often offers an expansion of 5 to 10 litres, which is usually sufficient for an overnight change of clothes or extra documents. The mechanism is typically a wraparound zipper that reveals an additional compartment. Check whether the expanded dimensions still comply with airline regulations for a carry-on backpack.
A professional backpack for men and women should reliably protect your valuable electronics. Models made from water-resistant polyester or nylon offer protection against light rain and splashes. Look for padded compartments for laptops and tablets to absorb impacts. Some models also offer features of an anti-theft backpack, such as hidden pockets on the back for valuables or lockable zippers.
Additional features significantly increase a backpack's utility. A backpack with a USB port has an external socket that connects to an internal power bank (not included), allowing you to charge devices on the go. A luggage strap on the back is indispensable for travellers, as it allows the backpack to be securely fastened to the handle of a rolling suitcase. A well-designed interior with multiple compartments helps you stay organised.
The following models have been selected for their specific features and functionalities. They cover a range of needs, from the versatile all-rounder to the specialised bag.
What sets it apart: This model is designed for maximum capacity and organisation. The volume expands from 29.5 litres to 36.8 litres, making it suitable for short trips or commuters with a lot to carry. With a total of 17 pockets, including a separate laptop compartment for devices up to 15.6 inches and a hidden anti-theft pocket, this backpack offers a highly detailed organisational structure. Travel-friendly features like the USB charging port and luggage strap complete the package.
Pros:
Who is it for? Ideal for business travellers and commuters who need an all-in-one solution for work and short trips and who value maximum organisation and flexibility.
What sets it apart: This backpack focuses on a minimalist design and low weight. With a base volume of 10 litres, expandable to 13 litres, it's designed for carrying daily essentials. The material, a high-strength, soft nylon, is advertised as being wind, rain, and dirt-resistant. Weighing only approx. 235 grams (8.3 oz), it is exceptionally light and comfortable to carry.
Pros:
Who is it for? Suitable for users who need a very light and compact backpack for their daily commute to work or university and only occasionally require a little extra storage space.
What sets it apart: This bag is an alternative to the classic backpack, offering the same flexibility as an expandable laptop bag. It is designed for large laptops up to 17 inches. An expansion zipper increases the bag's depth from 18 cm to approx. 23 cm (7 to 9 inches). With over 10 pockets, a detachable shoulder strap, and a luggage strap, it can be used flexibly as a shoulder bag, briefcase, or travel companion.
Pros:
Who is it for? Perfect for professionals or students who prefer the messenger bag format and need to transport a large laptop securely without sacrificing the flexibility of an expandable bag.
The models presented here already cover a broad spectrum of needs. If your specific requirements haven't been met, or if you'd like to compare more designs and sizes, it's worth exploring the entire range.
Discover our full collection of expandable travel laptop backpacks and find the perfect model for your needs.
The permitted dimensions for carry-on luggage vary by airline. A common size is around 55 x 40 x 20 cm. Many expandable backpacks are designed to meet these requirements when not expanded. It is advisable to check the specific regulations of your airline before a flight, especially if the backpack is fully packed and expanded.
A backpack with a USB port does not have its own power source. Inside the backpack, there is a USB cable that connects to a standard power bank (sold separately). This cable leads to an external USB port on the outside of the backpack. This allows you to conveniently charge your smartphone or other devices while the power bank remains safely stowed inside the backpack.
There is a difference between "water-resistant" and "waterproof." Most backpacks made of polyester or nylon are water-resistant. This means they protect the contents from light rain, splashes, or snow. However, during heavy, continuous rain or if submerged in water, moisture can still penetrate, often through the zippers. For complete protection in extreme weather conditions, special waterproof models with sealed seams and zippers are required.