Joybuy Insights

Choosing a Waterproof Backpack: What Should You Look for When Commuting, Travelling and Riding a Motorcycle?

A waterproof backpack may seem like a straightforward purchase at first glance. However, models vary considerably in terms of protection, carrying comfort and usable capacity. A bag that mentions “waterproof” in its product title is not automatically suitable for a long bike ride through the Dutch rain. A compact backpack may also offer too little room for a laptop, lunch and an extra layer of clothing.

Pay particular attention to the construction and dimensions—not just the marketing terminology.

Common pitfalls when choosing a waterproof backpack

1. Water-resistant does not mean waterproof

A water-resistant backpack will usually repel light drizzle better than a standard fabric bag. That does not necessarily mean that the seams, zips and closure will keep water out over an extended period. A waterproof dry bag backpack often uses a sealed or roll-top closure, whereas an everyday model may mainly rely on protective outer fabric and covered zips.

Therefore, check:

  • Whether the bag is described as waterproof or merely water-resistant.
  • Whether the opening uses a roll-top, flap or zip.
  • Whether the product mentions seams, welded seams or an inner compartment.
  • Whether the manufacturer specifies limitations, such as not submerging the bag for extended periods.

2. A stated laptop size does not tell the whole story

A 15.6-inch laptop backpack may appear suitable for any laptop with that screen size. In reality, laptops vary in thickness and edge width. Measure the laptop itself and compare its dimensions with those of the laptop compartment. Also consider the protection around the compartment: a separate sleeve or thin pocket offers less impact protection than a padded compartment.

A backpack with a laptop compartment is practical for work, school and commuting, but the laptop compartment reduces the bag’s total usable capacity. As a result, a 10-litre bag can fill up quickly.

3. More capacity is not always more comfortable

An expandable backpack offers flexibility, but additional capacity can also make the bag heavier or less stable. Check the capacity in both its standard and expanded configurations. Also inspect the shoulder straps, back panel and any sternum strap.

For everyday use, a lightweight backpack is often more comfortable than a large model with numerous separate compartments. For short trips, a travel backpack with a capacity of 25 to 35 litres may be more practical. Choose the capacity based on what you actually carry—not the largest number in the product title.

The most important specifications to compare

Material and closure

Nylon is lightweight and flexible. According to Beneunder’s product information, the LC183 uses a high-tenacity, ultra-soft nylon fabric with a protective coating against wind, rain and stains. This is a verifiable material specification, but the description does not provide a general guarantee against prolonged submersion.

For heavier rain or motorcycle use, PVC with a roll-top closure is another option. With this type of construction, the top must be rolled down several times and secured firmly. An incorrectly fastened closure or an overfilled bag can reduce its protective performance.

Capacity and dimensions

Use these guidelines as a practical starting point:

  • 10 to 13 litres: everyday essentials, a compact lunch, documents and small accessories.
  • 20 to 35 litres: a laptop, clothing, sports equipment or a short trip.
  • 36 litres and above: motorcycle luggage, longer rides or bulky equipment.

Do not focus on litres alone. The shape of the bag determines whether a laptop, water bottle or jacket can be stored efficiently. A hiking backpack often has a different layout from a commuting backpack.

Carrying comfort and attachment

For a backpack, adjustable shoulder straps, a stable back panel and good weight distribution are essential. Motorcycle bags require a different set of considerations. A motorcycle tail bag or waterproof motorcycle bag must be securely attached to the bike without obstructing the brakes, lights or controls.

Before every ride, check:

  1. That all straps are securely fastened.
  2. That the bag cannot come into contact with the wheel or exhaust.
  3. That the contents remain within the stated capacity.
  4. That the roll-top is closed correctly.

Our recommendations by user profile

Suitable for: Budget-conscious beginners
Beneunder LC183 expandable waterproof backpack, beige

Beneunder LC183, expandable 10L backpack

Why it suits this profile: The bag is compact enough for everyday use and, according to the product specifications, can be expanded from 10 to 13 litres. That makes it suitable for commuting, school and short walks.

How this product avoids the pitfall

The standard and expanded capacities are clearly stated. According to the product information, the protective fabric resists wind, rain and stains; prolonged submersion is not promised.

Key benefit & advantages

Stated weight of 8.3 oz, 10/13-litre capacity, nylon construction and pressure-relieving shoulder straps.

Suitable for: Buyers seeking premium quality
Water-resistant 15.6-inch roll-top laptop backpack

Water-resistant 15.6-inch roll-top laptop backpack

Why it suits this profile: The roll-top design is ideal for users who want to carry their laptop and everyday essentials in an organised way during work commutes, bike rides or city breaks.

How this product avoids the pitfall

The product name specifies water-resistant rather than automatically claiming full waterproof protection. This makes the distinction from a dry bag clearer when comparing options.

Key benefit & advantages

Suitable for a laptop up to 15.6 inches according to the product name, with a roll-top closure and multiple carrying options for work and travel.

Suitable for: Specialist use & intensive users
36-litre waterproof motorcycle tail bag with roll-top closure

36L Motorcycle Tail Bag, waterproof PVC motorcycle bag

Why it suits this profile: This bag is designed for motorcycle rides and offers 36 litres of capacity. Its PVC construction, roll-top closure and reflective details make it suitable for commuting and longer journeys.

How this product avoids the pitfall

The product description specifies PVC construction, a roll-top closure and four attachment straps. The bag must be rolled and secured correctly; prolonged submersion is not recommended.

Key benefit & advantages

36-litre capacity, PVC construction, reflective elements and quick-release straps according to the product information.

Looking for more options?

We have compiled a complete, up-to-date list of products that fully meet these strict selection criteria and the applicable European safety regulations.

Care for a longer service life

A waterproof backpack remains reliable when you look after its closure and fabric properly. Wipe away dirt with a damp cloth and allow the bag to air-dry. Do not use harsh cleaners, and do not leave PVC near a radiator or another heat source for extended periods. Only machine-wash a backpack if the manufacturer explicitly permits it.

For a motorcycle tail bag, it is advisable to remove water and dirt after a wet ride. Regularly inspect the seams, buckles and attachment straps as well. Sharp objects can damage the inner layer and reduce the bag’s water-repellent performance.

Frequently asked questions about waterproof backpacks

Is a water-resistant backpack suitable for daily cycling?

That depends on the intensity of the rain and the bag’s construction. For short rides in light rain, a water-resistant backpack may be sufficient. In heavy or prolonged rain, a roll-top bag or dry bag generally provides a more substantial barrier. Consider placing important electronics in an additional protective sleeve.

How many litres do I need for commuting?

For a laptop, documents, lunch and a few accessories, 15 to 25 litres is often practical. A compact 10-litre bag works if you carry very little. For clothing, shoes or a short trip, 25 to 35 litres may be more convenient. Measure your laptop and check the internal compartments before ordering.

How do I properly close a waterproof roll-top backpack?

Keep the contents within the stated capacity, fold the top edge down several times and fasten the buckle or closure securely. Then check that the opening is not twisted and that no sharp objects are pressing against the walls. A roll-top bag is not an invitation to fill it without limits.