Lieferung heute & morgen
Qualitätsgarantie
Willkommens-Angebote freischalten: KOSTENLOSE Lieferung | Bis zu 80 % RABATT | Kostenlose 30-Tage-JoyPlus-Testphase
App herunterladen
By Joybuy Product Recommendation Officer, 21 July 2026
Everyday life demands flexibility—and so does the gear we carry. One day, a laptop and notebook are all you need; the next, you might have to pack gym clothes or accommodate a last-minute shopping trip. An expandable backpack offers a practical solution by adjusting its volume to fit your changing needs.
This article serves as your guide. We'll explain the key features to look for when choosing a backpack and showcase models that stand out for their functionality, perfectly suited for commuters, students, and travellers. Our goal is to provide you with the information you need to make an informed decision.
Choosing the right backpack depends on your individual needs. The following criteria will help you objectively compare the features of different models.
Capacity is a key feature. A good starting point is a base volume that's sufficient for daily use, like that of a compact 10L travel backpack. Pay close attention to how the expansion mechanism works. It's usually a wraparound zipper that releases an extra compartment. Check how much additional volume this creates and whether the backpack maintains its shape and stability when expanded. A moderate expansion of 20–30% often strikes the perfect balance between extra space and manageability.
A lightweight backpack significantly enhances everyday carrying comfort. Materials like high-strength nylon offer an excellent balance of low weight and high durability. For daily use, a degree of weather protection is essential. A waterproof daypack is often equipped with a special coating or fabric that is water- and dirt-repellent. These models reliably protect your belongings during a rain shower on your way to work or university. Look for terms like "water-repellent" or "splash-proof", which are generally sufficient for everyday use.
A commuter backpack is often worn for extended periods. Ergonomically shaped and padded shoulder straps are therefore crucial for distributing pressure evenly. An adjustable sternum strap can provide additional stability, which is especially beneficial in a small hiking backpack. A thoughtful interior layout with separate compartments for a laptop, documents, and small items helps you stay organised. Hidden pockets on the back panel or in the straps also offer secure storage for valuables. Many modern designs are conceived as a unisex backpack, adapting to various body types.
Based on the criteria above, we have curated a selection of backpacks that impress with their thoughtful design and versatility. The following model from Beneunder is a prime example of these qualities in action.
This model is available in several colourways and is aimed at users looking for a lightweight, flexible, and weather-resistant companion for daily life and travel.
What makes this backpack stand out
The Beneunder backpack combines a minimalist design with high functionality. Its core feature is the integrated expansion function, which increases the volume by 30% on demand, from 10 litres to 13 litres. Made from a high-strength, soft nylon fabric, the backpack is exceptionally light, weighing only approx. 235 grams (8.3 oz). According to the manufacturer, its multifunctional protective fabric is wind, rain, and dirt-repellent.
Pros:
Who is it for? This model is an excellent choice for active commuters, students, and weekend travellers who want a single backpack for various occasions. Its compact size in its standard form makes it discreet, while the expansion option provides the flexibility for unexpected purchases or an extra layer of clothing.
If the featured models don't perfectly match what you're looking for, or if you'd like to compare other designs and sizes, you can find more alternatives in our wider selection.
Discover more models in our active foldable daypack category.
An expandable backpack has a mechanism to increase its storage volume. In most cases, this is a zipper that runs around the main body of the pack. When unzipped, it releases a fabric gusset that enlarges the main compartment, creating additional space.
A backpack with a volume of 10 to 13 litres is typically well within the standard carry-on limits for most airlines, in both its standard and expanded states. However, you should always check the exact dimensions (e.g., 33.5 cm × 15.5 cm × 32.5 cm) against your airline's specific regulations before travelling.
To maintain the fabric's water-repellent properties, gentle cleaning is recommended. For any dirt, wipe the surface with a damp cloth. Afterwards, let the backpack air dry completely. Avoid machine washing or using direct heat sources (like a radiator), as this can damage the material and its coating.