Buying a backpack: how to choose a practical bag for school, work and travel

A backpack may seem simple to choose, but small differences determine whether it remains comfortable in everyday use. One model may appear spacious, while books or a laptop press awkwardly against each other. Terms such as “waterproof”, “ergonomic” or “sustainable” do not always tell you enough without specific details.

So pay particular attention to these common pitfalls:

• Insufficient protection: a backpack with just one large main compartment does not automatically protect a laptop.
• Unrealistic capacity: the stated number of litres does not indicate how practical the layout is. A 25-litre bag with one large compartment may be less useful than a smaller model with several compartments.
• Confusing water-resistant with waterproof: “water-resistant” or water-repellent materials help protect against light rain, but do not guarantee that the contents will stay dry during prolonged rainfall.
• A heavy or poorly fitting design: wide straps, a padded back panel and an adjustable chest strap can improve carrying comfort, but the fit varies from person to person.

Which specifications should you check?

1. Laptop size and internal dimensions

If you are looking for a laptop backpack, backpack with laptop compartment or a backpack for a 15.6-inch laptop, do not only look at the screen size. Measure the laptop itself as well, including any protective case. A 15.6-inch laptop is not the same size with every brand.

Therefore, check:

• the maximum screen size;
• the dimensions of the laptop compartment;
• whether the compartment is padded;
• whether the laptop fits securely rather than being too loose or too tight.

According to the product specifications, the HP Travel 25L is suitable for devices up to 15.6 inches. The Lenovo ThinkPad Professional is described as having a notebook compartment with maximum compatibility up to 16 inches, although the product information also mentions protection for laptops up to 15 inches. If in doubt, check the current dimensions on the product page.

2. Capacity and layout

For school, work or a short trip, a spacious backpack is useful, but a large capacity can also encourage you to overfill it. Think in advance about what you take with you every day:

• laptop and charger;
• books or documents;
• lunch and water bottle;
• sportswear;
• accessories such as a mouse, cables and power bank.

According to the product information, the PUMA Academy Backpack has a capacity of approximately 24 litres, two main compartments, a front pocket and two mesh side pockets. The HP Travel has a capacity of 25 litres, expandable to 30 litres. An expandable compartment is practical for travel, but only use it when you genuinely need the extra space.

3. Material, carrying comfort and rain protection

A comfortable backpack should ideally have adjustable, padded shoulder straps and a back panel that does not press unnecessarily hard against your back. For longer bike rides or commuting, a chest strap can help keep the bag more stable.

Also pay attention to the precise material claim:

• Water-repellent: suitable for light rain or splashes, depending on the construction.
• Waterproof: generally requires a better-sealed design, such as taped seams or a waterproof closure.
• Recycled material: indicates something about part of the material choice, but does not automatically say anything about durability or repair options.

The HP Prelude Pro is described as water-repellent and made from 95% recycled external material. According to the product information, the Lenovo backpack contains 70% recycled material. These are verifiable product specifications, but on their own they do not guarantee a longer lifespan.

Our recommendations for different uses

Suitable for: Budget-conscious beginners

PUMA Academy Backpack Black Unisex

Why it suits this profile: This sporty backpack offers a practical layout for school, everyday use and light sporting activities. With a capacity of approximately 24 litres, it is suitable for books, clothing and daily essentials.

How this product avoids the pitfall

The two compartments, front pocket and mesh pockets prevent everything from ending up in one disorganised compartment.

Key benefit & advantages

Two-way zips, adjustable padded shoulder straps and, according to the product information, at least 70% recycled materials.

Suitable for: Buyers seeking premium quality

Lenovo ThinkPad Professional 2nd Generation Laptop Backpack

Why it suits this profile: A business backpack for commuters and professionals who want to carry a laptop, documents and accessories in an organised way.

How this product avoids the pitfall

The separate notebook compartment prevents a laptop from sitting directly against documents or other belongings. The zip closure helps keep the contents securely enclosed.

Key benefit & advantages

Dimensions of 30 × 18.5 × 43.5 cm, a carry handle and, according to the product specifications, 70% recycled material.

Suitable for: Specific uses & intensive users

HP Travel 25L 15.6-Inch Blue Laptop Backpack

Why it suits this profile: This travel backpack is ideal for commuters and travellers who need extra space for a laptop, clothing, snacks and accessories.

How this product avoids the pitfall

The various compartments reduce the need to search through one large main compartment. The chest strap can help you carry the bag more securely; do not overfill it.

Key benefit & advantages

25-litre capacity, expandable to 30 litres, laptop compartment for 15.6-inch devices and lockable zips according to the product description.

Other models are better suited to different situations. The HP Prelude Pro 15.6-Inch Backpack is an option for anyone looking for a water-repellent laptop backpack with a trolley strap and reflective accents. For a compact solution, the HP Everyday 14-Inch Laptop Bag is a 9-litre laptop bag with a padded compartment and detachable shoulder strap. The Inateck 15.6 Inch Laptop Bag Sleeve has internal dimensions of 38.5 × 26.5 × 3 cm and can be used as either a sleeve or shoulder bag.

Not every carry bag is suitable as a school backpack or laptop backpack. According to the product description, the 20-litre 2-in-1 carry bag transforms into a round picnic mat measuring 100 cm and folds down to 30 × 20 cm. The extra-large moving bags with backpack straps are designed for storage and removals, not for carrying a laptop every day. This helps you avoid buying a spacious bag that does not suit the way you intend to use it.

Frequently asked questions about backpacks

How big should a backpack for school or work be?

For everyday use, a capacity of around 20 to 30 litres is often practical, depending on your laptop, books and lunch. Above all, check the compartment layout. A bag with fewer litres may be more useful when the space is distributed well.

How do you care for a backpack so that it lasts longer?

Clean the bag with a slightly damp cloth and mild cleaning solution, unless the care label advises otherwise. Avoid using the washing machine unless recommended by the manufacturer. Check the zips and seams regularly, and prevent sharp objects from pressing directly against the fabric or laptop compartment.

Is a water-repellent backpack completely waterproof?

No. Water-repellent material generally offers protection against light rain and splashes. During prolonged rain, moisture can enter through zips, seams or openings. If necessary, use a separate protective case for electronics and always check the specific product information.