Joybuy Insights

Choosing a backpack without making a mistake: practical tips for work, school, travel and hiking

A backpack might seem simple to choose, until you notice every day that the shoulder straps dig in, your belongings don't fit, or a rain shower still manages to get inside. What's more, marketing terms like "waterproof", "ergonomic" and "large capacity" don't always tell the full story.

So before you buy, watch out for three common pitfalls:

  1. Capacity is often overstated. A 20 or 30-litre backpack can sound roomy, but the layout and shape determine how much you can actually carry.
  2. Water-resistant is not the same as waterproof. A water-repellent backpack can help keep out light rain and splashes. That doesn't automatically mean it can handle heavy, prolonged rain or submersion.
  3. Comfort is described too vaguely. Padded straps help, but the length, width, ventilation and weight distribution are at least as important.

Which specifications should you check?

1. Capacity and dimensions

Choose the capacity based on how you'll use it:

  • 10 to 15 litres: suitable as a lightweight backpack for a wallet, phone, lunch, a light jacket and a few small items.
  • 20 to 25 litres: practical for daily use, school, work or gym kit.
  • 30 litres or more: suitable for a travel backpack, day trip or hiking backpack with extra clothing and gear.

Don't just look at the litre capacity. Also check the dimensions, because a wide backpack can be less practical in a bike pannier, locker or under a seat. An expandable backpack is handy when you sometimes need extra space, but check that the bag remains comfortable to wear when extended.

2. Material and rain protection

Many backpacks are made from polyester, nylon or a combination of the two. Nylon is often known for being flexible and lightweight; polyester is widely used for its shape retention and everyday durability.

Pay attention to the precise wording in the product information:

  • Water-repellent or anti-splash: designed to help ward off splashes and light rain.
  • Waterproof: usually requires more information about seams, zips and any hydrostatic head rating.
  • Protective coating: can limit wear, dirt or moisture, but its durability depends on use and care.

For example, the product description for the Beneunder LC183 states that the fabric is resistant to wind, rain and stains. That's no guarantee that the contents will stay dry in prolonged rain. For electronics in bad weather, consider using a separate cover.

3. Comfort and organisation

A comfortable backpack for commuting ideally has adjustable, padded shoulder straps and a back panel that doesn't feel unnecessarily hard. For hiking, ventilation, a stable fit and good weight distribution are more important than just a low weight alone.

Also check the pockets:

  • Does your laptop actually fit in the laptop compartment?
  • Is the compartment padded and does it close properly?
  • Can you store documents flat?
  • Are keys, phone and cards easily accessible?
  • Is there a side pocket for a water bottle?
  • Does the bag stay organised when fully packed?

A backpack with multiple compartments can be more organised, but lots of zips and dividers can also reduce the available main space.

Our recommendations by use case

The choices below are linked to verifiable details from the product descriptions. Always check the current sizing, stock, colour and compatibility with your own equipment before ordering.

Suitable for: Budget-conscious beginners
Beneunder LC183 expandable backpack 10 litres grey

Beneunder LC183, expandable backpack 10 litres

Why this fits the profile: This lightweight unisex backpack is designed for daily use, commuting, short trips and light walks. According to the specifications, the capacity expands from 10 to 13 litres.

How this product avoids the pitfall

The normal and expanded capacities are listed separately. The manufacturer describes the fabric as wind-, rain- and stain-resistant; treat this as protection against light conditions, not as proof of full waterproofing.

Key benefit & highlights

8.3 oz own weight, expandable design with 30% extra capacity according to the product description, and dual pressure-relieving shoulder straps.

Suitable for: Shoppers seeking top quality
Salomon Trailblazer 30 backpack

Salomon Trailblazer 30 Backpack C21833

Why this fits the profile: The 30-litre capacity suits day trips, urban adventures and users who carry extra clothing or hiking gear.

How this product avoids the pitfall

The product information mentions not just the capacity, but also an improved shoulder strap and back panel, breathable mesh and multiple compartments. That gives more reassurance than just the term "ergonomic".

Key benefit & highlights

30-litre capacity, multiple compartments and breathable mesh on the shoulder straps and back panel according to the provided product specifications.

Suitable for: Specific use & heavy users
PUMA Academy Backpack Black Unisex

PUMA Academy Backpack Black Unisex

Why this fits the profile: The roughly 24-litre capacity, two main compartments and multiple pockets suit school, work, sport and daily transport of more items.

How this product avoids the pitfall

The storage space is clearly laid out with two compartments, a front pocket, side pockets and a padded internal pocket. Do check whether your laptop size falls within the stated maximum compatibility.

Key benefit & highlights

Dimensions of 45 × 30 × 18 cm, roughly 24-litre capacity and at least 70% recycled materials according to PUMA's product information.

Looking for more options?

We've put together a full, up-to-date list of products that fully meet these strict selection criteria and comply with current European safety regulations.

How to choose a backpack for your situation

For a backpack for daily use, a low weight, a well-organised layout and adjustable straps are often more important than maximum capacity. If you cycle to work, you might also look for a chest strap, reflective details and a shape that sits close to your back.

A school backpack needs to carry books, a lunchbox and possibly a laptop without putting the zips under strain. Measure your laptop and compare the dimensions with the compartment; screen sizes alone aren't always enough.

For a travel backpack, expandable capacity, hidden pockets and sturdy zips are practical. For hiking, what matters most is whether the backpack stays stable when you carry water, snacks and an extra layer of clothing. A 30-litre model gives you more leeway for that than a lightweight 10-litre bag.

Care and lifespan

The lifespan depends on load, material, zip quality and maintenance. Don't store wet clothing in the bag for long periods and don't overload pockets. Clean the surface according to the instructions. For the Beneunder LC183, it's recommended to wipe the bag with a damp cloth, let it dry naturally and avoid machine washing or prolonged heat.

A separate rain cover can be a practical addition if you often cycle or walk in changeable weather. Store the backpack in a dry place and check the seams, buckles and shoulder straps from time to time.

Frequently asked questions about backpacks

How big should a backpack for daily use be?

For commuting or school, around 20 to 25 litres is often a good balance between compact and roomy. If you only carry basic items, 10 to 15 litres may be enough. For a laptop, lunch, clothing and sports kit, more capacity is more practical.

Is a water-repellent backpack completely waterproof?

No, not automatically. "Water-repellent" or "anti-splash" usually refers to protection against splashes and light rain. Check whether the manufacturer provides information about sealed seams, zips and a waterproof rating. Use extra protection for valuable electronics.

How long does a backpack typically last?

That varies depending on the material, load and frequency of use. A bag that's heavily packed every day will wear out faster than a lightweight backpack used only for short trips. When buying, pay attention to the warranty, the quality of the zips and buckles, and the care instructions.