KLOSTAIN 20L Cabin Backpack, 40 × 20 × 25 cm

The KLOSTAIN cabin backpack is listed at 20 litres and 40 × 20 × 25 cm, with pockets for travel essentials and a separate laptop compartment. Its compact stated dimensions suit buyers seeking an underseat-style bag, while the listing’s broad airline compatibility claim should not replace checking the rules for your specific flight.

At a glance

Compact stated size and 20-litre capacity are positioned for cabin and underseat travel.
Separate laptop compartment is listed for devices up to 14 inches.
Pockets include quick-access storage and two mesh holders for a bottle and umbrella.
Adjustable padded shoulder straps and ventilated back padding are claimed.

Price

£21.26Save 21%

Reference price: ~~£26.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

The 700-gram listed weight keeps the bag’s stated empty weight low for a carry-on backpack.
A dedicated laptop compartment and multiple described storage areas can help separate travel items.
The listing describes water-resistant polyester and a wipe-clean care method.

Technical specifications

21 specifications

Identity
Brand field in technical details	Guangzhou Yueke Leather Co., Ltd.
Product type	backpack
Colour	Black

Capacity and dimensions
Capacity	20 Liters
Dimensions (D × W × H)	20D x 25W x 40H centimetres
Listed size	40 x 20 x 25cm-20L
Weight listed	700 Grams

Materials and protection
Material listed	100% polyester
Outer material	Polyester
Shell	Soft Shell
Water resistance listed	Water Resistant
Care	Wipe with Damp Cloth

Carry and organisation
Straps	Padded and adjustable shoulder straps
Strap size	Adjustable
Harness	Shoulder Harness
Maximum compatible device size	14 Inches
Compartment count	4
Zippered compartment count	6
Pocket count listed	2
Pocket description	Laptop compartment, utility pocket, stash pocket, front pocket for quick access, two mesh pockets for water bottle and umbrella
Closure	Zipper

What to know before buying

Listing details to confirm

The title and feature text identify KLOSTAIN, but the technical-details brand field instead names Guangzhou Yueke Leather Co., Ltd. The pocket-count field says 2 despite a description listing several pockets, and the listed four compartments and six zipped compartments are not reconciled. Dimensions and airline suitability are listing claims, so confirm the selected bag’s measurements and your airline’s current allowance before travel.

Who is it for?

A good fit for

Travellers seeking a compact, 20-litre backpack with stated dimensions of 40 × 20 × 25 cm.
Buyers who want a separate compartment for a laptop up to the listed 14-inch maximum.
People who value adjustable padded straps and separate storage for small items and a water bottle.

Less suited to

Anyone needing space for a larger laptop than the listed 14-inch maximum.
Buyers who need a confirmed fit under a particular airline seat or a verified allowance for a specific fare.

KLOSTAIN 20L Cabin Backpack, 40 × 20 × 25 cm · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 8,435 ratings

5 stars78%78%
4 stars15%15%
3 stars4%4%
2 stars1%1%
1 star2%2%

Customer feedback highlights organisation, useful pockets, travel practicality, comfort and fit under budget-airline seats. These impressions align with the listing’s compact stated dimensions, pocket descriptions and padded straps, but they do not guarantee the bag will meet a particular airline’s rules or fit every traveller’s packing needs. Aggregate ratings are mostly five-star, while a smaller share are lower, so individual experiences are not uniform.

Positive themes

Customers describe the pockets as useful for organising clothing, toiletries and electronics.
Feedback reports comfortable shoulder padding and a suitable fit under budget-airline seats.

Frequently asked questions

What are the listed dimensions and capacity?

The listing gives the size as 40 x 20 x 25cm-20L and the dimensions as 20D x 25W x 40H centimetres.

What size laptop is it listed to fit?

The maximum compatible device size is listed as 14 Inches. The listing does not provide laptop compartment dimensions.

Is it described as water resistant?

Yes. The listing labels its water resistance as Water Resistant, but does not state an immersion rating or guarantee.

Can I rely on the listed size for my flight?

The listing claims compatibility with several airlines. Check the current baggage allowance for your airline, route and fare, and compare it with the packed bag’s dimensions.