Samsonite Guardit 3.0 Briefcase, 18.5 L, for up to 17.3-inch devices

The Samsonite Guardit 3.0 briefcase is a 18.5-litre work bag with dedicated laptop and tablet slots, document storage and a detachable shoulder strap. The listing describes a water-resistant coating and recycled PET polyester construction, while its dimensions appear inconsistent across the product details, so confirm the size if it matters for your carry setup.

At a glance

Laptop and tablet slots, a document pocket and an adjustable securing strap are described for the main compartment.
Front zip pocket includes a transparent mesh zip compartment.
Adjustable, removable shoulder strap and padded handles provide alternative carrying options.
A smart sleeve is described for attaching the bag to a trolley handle.
The listing says recycled PET is used for the outer material, lining and zippers.

Price

£45.16Save 23%

Reference price: ~~£59.00~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

Work items can be separated into dedicated laptop, tablet and document storage rather than sharing one undivided compartment.
The removable shoulder strap, padded handles and trolley sleeve support different carrying arrangements.
The listing states that a protective coating makes the bag water resistant.

Technical specifications

16 specifications

Identity
Brand	Samsonite
Model	Guardit

Dimensions and weight
Dimensions listed	46 x 33.5 x 8 centimetres
Weight listed	0.6 Kilograms
Outer size also stated	43 x 32 x 10 cm

Capacity and organisation
Capacity	18.5 litres
Maximum compatible device size	17.3 Inches
Compartments	2
Sections	1
Closure	Zipper
Strap type	Shoulder

Materials and protection
Material listed	100% recycled PET polyester
Lining	Polyester
Water resistance	this product has been treated with a protective coating that makes the briefcase water resistant

Appearance
Colour	Black
Pattern	Solid

What to know before buying

Listing details to confirm

The listing gives conflicting outer dimensions: 46 x 33.5 x 8 centimetres in the details and 43 x 32 x 10 cm in a feature description. Confirm which size applies before buying if fit is important. The stated 17.3-inch device limit is a size claim, not a guarantee that every device of that screen size will fit. The claimed protective coating is described as water resistant, not waterproof.

Who is it for?

A good fit for

Commuters or office users who want separate laptop, tablet and document storage in one briefcase.
Buyers who prefer a shoulder strap that can be removed and a sleeve for trolley-handle travel.

Less suited to

Anyone who needs confirmed measurements before choosing a close-fitting bag or case.
Buyers who need a stated waterproof rating or protection against heavy rain.

Samsonite Guardit 3.0 Briefcase, 18.5 L, for up to 17.3-inch devices · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 30 ratings

5 stars66%66%
4 stars15%15%
3 stars14%14%
2 stars0%0%
1 star5%5%

Aggregate ratings lean positive, with most ratings in the five-star category, but a smaller share is spread across three- and one-star ratings. With no written customer feedback supplied, these figures do not explain what buyers liked or what prompted lower scores. Treat them as a limited indication of reception rather than evidence of fit, durability or water resistance.

Frequently asked questions

What size laptop does the listing say this briefcase can accommodate?

It gives a maximum compatible device size of 17.3 inches. Check your device's dimensions against the bag's internal fit, since screen size alone does not establish compatibility.

Is the Guardit 3.0 waterproof?

The listing describes a protective coating that makes it water resistant. It does not claim a waterproof rating.

What are the briefcase dimensions?

The details list 46 x 33.5 x 8 centimetres, while a feature description gives an outer size of 43 x 32 x 10 cm. The measurements are contradictory, so confirm the relevant size with the selected listing.

Can the shoulder strap be removed?

Yes. The feature information describes the shoulder strap as adjustable and removable.