Joybuy Insights

How to choose a backpack without regretting your purchase: a practical guide for school, work, sport and travel

A backpack seems easy to choose until you start using it every day. That’s when you find out whether the shoulder straps adjust properly, whether your belongings fit neatly and whether the fabric can withstand rain and wear. Marketing terms such as “extra spacious”, “ergonomic” or “water-repellent” don’t tell you much on their own. Always check the capacity, dimensions, materials and compartments in the product specifications.

Common pitfalls when buying a backpack

1. Focusing only on litres
A 30-litre backpack has more room than a 20-litre model, but that doesn’t automatically make it suitable for everyday use. A large bag can be unnecessarily heavy or awkward if you mainly carry a laptop, lunch and sportswear. Check the dimensions and the backpack’s own weight too.

2. Confusing water-repellent with waterproof
According to the product description, polyester, nylon and coated materials may offer protection against light rain or damp. That doesn’t mean the backpack will stay waterproof for a prolonged period. If you cycle in changeable British weather, you may need extra protection, such as a rain cover or waterproof inner bag.

3. Assuming more compartments mean better organisation
A backpack with several compartments is practical if they’re large enough for your belongings. Small zipped pockets are handy for keys and accessories, but they can reduce the space in the main compartment. So check where your water bottle, books, clothes and electronics will actually fit.

Which specifications deserve your attention?

1. Capacity and size

Choose a capacity that suits how you’ll use the backpack:

  • 12 to 20 litres: suitable for trail running, short walks, commuting or just carrying your everyday essentials.
  • 20 to 30 litres: a versatile choice for school, work, sport and day trips.
  • 30 to 50 litres: more room for travel, camping or longer walks, but pay extra attention to comfort and how you pack it.

A 20-litre backpack is usually compact. A 30-litre backpack gives you more flexibility for clothes and accessories. A 50-litre backpack is mainly worthwhile if you really need to carry a lot of kit.

2. Comfort and adjustability

Look for padded shoulder straps, a supportive back panel and straps that can be adjusted properly. For walking, hiking or trail running, a chest strap and sometimes a hip belt can help keep the bag stable. A breathable mesh panel may improve airflow, but it won’t prevent you from sweating in every situation.

Check the fit too. A unisex backpack can be worn by different people, but fit is still personal. For trail running, a close-fitting model is generally more practical than a loose school backpack.

3. Material, zips and care

Many models are made from polyester, nylon, polyamide or Oxford fabric. According to the manufacturer’s product description, coatings and woven fabrics may help improve wear resistance or water resistance. Treat these as product specifications, not as a guarantee of a particular lifespan.

Also check:

  • the quality and positioning of the zips;
  • reinforced seams and base;
  • whether the care instructions suit how you’ll use it;
  • whether there’s a separate compartment for a laptop, tablet or documents;
  • visibility features if you cycle or walk in the dark.

The legal guarantee in the EU for these products is at least two years; additional rights may apply under the relevant Dutch rules. Keep your order details and check the latest product information before buying.

Recommended backpacks for different users

Suitable for: Budget-conscious beginners
PUMA Phase Backpack II Black Unisex

PUMA Phase Backpack II Black Unisex

Why it suits this profile: With a capacity of around 20 litres, it’s a good fit for school, work, sport and everyday use, without needing to carry a large model.

How this product avoids the pitfall

The product specifications list a main compartment with a two-way zip, a front pocket and a mesh side pocket. This lets you assess the layout instead of relying on a vague claim that it’s “spacious”.

Main benefit & highlights

Around 20 litres, a padded back panel, adjustable shoulder straps and, according to the product information, at least 90% recycled materials.

Suitable for: Shoppers looking for top quality
Salomon Trailblazer 30 Backpack C21833

Salomon Trailblazer 30 Backpack C21833

Why it suits this profile: This model is designed for people who want one backpack for day trips, city outings and everyday commuting.

How this product avoids the pitfall

Its 30-litre capacity is combined with several compartments and a lightweight, ergonomic design. This makes it easier to weigh up both the space and the organisation.

Main benefit & highlights

30-litre capacity, nylon and polyester fabric, breathable mesh on the shoulder straps and back panel, and several storage compartments according to the product description.

Suitable for: Specialist use & intensive users
Salomon Cross 12 Tahitian Tide Black C21858

Salomon Cross 12 Tahitian Tide/Black C21858

Why it suits this profile: This compact hiking backpack is designed for day walks and trail running, where a stable, lightweight carry solution matters.

How this product avoids the pitfall

Its 12-litre capacity means you won’t end up carrying an oversized bag on a short trip. The chest straps, shoulder strap pockets and reflective buckle are clearly specified features.

Main benefit & highlights

12 litres, polyamide outer material, padded back panel, dual chest straps and compatibility with a 1.5-litre hydration system; bottle not included.

Suitable for: Travellers and outdoor enthusiasts
vidaXL Military-Style Backpack 50 L Camouflage

vidaXL Military-Style Backpack - 50 L, Camouflage

Why it suits this profile: Its large capacity is aimed at travel, hiking and outdoor activities where clothes and equipment take up plenty of space.

How this product avoids the pitfall

The stated capacity, dimensions, four compartments and adjustable chest and hip straps make it clear what you’re getting. This model is therefore less suitable if you only carry a few light everyday items.

Main benefit & highlights

50 litres, coated Oxford fabric, compression strap, adjustable chest strap and hip belt, plus a stated product weight of 1.15 kg.

Looking for more options?

We’ve put together a complete, up-to-date list of products that meet these strict selection criteria and the applicable European safety regulations.

Frequently asked questions about backpacks

What capacity should a backpack for school or work be?

For a laptop, books, lunch and a few accessories, 20 to 30 litres is usually practical. As well as checking the capacity, make sure your laptop will actually fit in the designated compartment. A smaller model may be enough if you’re only carrying sportswear and a bottle.

How do you clean a backpack?

Always follow the manufacturer’s care instructions. Many models can be wiped clean with a damp cloth. Don’t assume that a coated backpack, or one with zips or padded sections, can go in the washing machine. Leave a damp bag to air-dry and avoid direct heat, unless the product information says otherwise.

When is a hiking backpack a better choice than a regular backpack?

A hiking backpack often has features such as chest or hip straps, a breathable back panel, compression straps and easy-to-reach pockets. These features aren’t essential for a short walk around town. For longer walks or a trail running backpack, stability, low weight and easy access to drinks matter more than a dedicated laptop compartment.