Lockable zippers and cut-resistant panels, verified rather than assumed · review
Maelstrom MSLPTBP13 laptop backpack, 15.6–17.3 in review
One of the two cheapest bags on this shelf, and the only American one here that says where its hidden pocket is — against the back, which is the placement this hub compares.
The summing up A good laptop backpack with one well-placed security pocket, sold under a label it only just reaches.
This is among the cheapest bags on the shelf and the clearest example of what this hub’s introduction warns about — which is not a criticism of the bag so much as of the word on the box. “Anti-theft” here means one hidden pocket. There is no locking zip, no slash-resistant panel, no cut-resistant cable in the strap. The introduction to this page describes that end of the range in advance: little more than a hidden zip pocket and marketing language.
What it does better than its shelfmates is say where the pocket is. A hidden pocket on an outer face is hidden from the owner, not from a hand in a crowd; this one is on the back panel, pressed against the wearer, which means it cannot be opened while the bag is being worn. That is the placement this hub compares, and it is the design idea behind the Bobby Hero published in the European half of this hub. Of the six bags in the American half, this is the only one to state it.
As a laptop backpack rather than a security bag it is well put together. A 17.3 in sleeve with a separate 9.7 in tablet slot and a removable hook-and-loop divider to stop the machine sliding; eight pockets in all; a luggage strap for a wheeled case; thickened breathable foam on the straps and the back. Two sizes, so the sleeve can match the machine rather than swallow it.
Two claims to discount. “Waterproof”, repeated, with no rating, no coating named and no seam treatment, on a bag with exposed zips — the same maker makes the same claim on this hub’s laptop-backpack shelf, where four of seven listings use the achievable word instead. And a “secure ticket-pocket style opening design” sounds like a security feature and is a description of a shape. There is no weight published, where four bags on this shelf publish one, and no dimensions and no capacity at all.
Availability
Read on the day this page was built: $24 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.
What it does well, and where it fails
Strengths
States the placement, not just the existence: a hidden anti-theft pocket on the back panel
A 17.3 in laptop sleeve with a separate 9.7 in iPad slot, the largest screen size on this shelf
A removable hook-and-loop divider to stop the laptop sliding inside its sleeve
Eight pockets in all: two zipped at the front, two elastic at the sides, plus the hidden one
A luggage strap on the back for a wheeled case handle
Thickened breathable foam on the straps and the back panel
Sold in two sizes, 15.6 and 17.3 in, so the sleeve can be matched to the machine
Can be carried by hand or over a shoulder as well as on the back
Compromises
A hidden pocket is its only anti-theft feature: no locking zip, no slash-resistant panel, no cut-resistant strap cable
That is exactly the floor this hub's introduction describes — "little more than a hidden zip pocket and marketing language"
Claims the bag is waterproof, with no rating, no coating named and no seam treatment described
No weight published, where four bags on this shelf give one
No dimensions and no capacity in liters published anywhere
A "secure ticket-pocket style opening design" is not a security feature, whatever it sounds like
The bullets sell the same bag as a women's bag and a men's bag in consecutive sentences
Specifications
Amazon reference
B0FQ5P2Z7B
EAN
0850073838280
What travelers ask
Why does the placement of a hidden pocket matter?
Because a hidden pocket on an outer face is hidden from you and not from a hand in a crowd. The third thing this hub compares is where the pocket sits, and a pocket built into the back panel presses against the wearer's spine — which means it cannot be opened at all while the bag is on. The XD Design Bobby Hero published in the European half of this hub is built on exactly that idea. Of the six bags in the American half, this is the only one to state the placement; one other says simply that it has a hidden pocket.
Is one hidden pocket enough to call it anti-theft?
The introduction to this page answers that before you ask. It says the label covers everything from reinforced slash-resistant panelling down to "little more than a hidden zip pocket and marketing language", and this bag is the second of those. There is no locking zip, no slash-resistant panel and no cable in the strap. What there is, is a well-placed pocket for a passport and a wallet, on a well-equipped laptop backpack at one of the two lowest prices on the shelf — which is a reasonable thing to buy as long as you know which half of the range you are buying.
Is it waterproof?
The listing says so and nothing supports it. There is no rating, no coating named, no seam treatment described, and the bag has exposed zips. The same maker's pack on this hub's laptop-backpack shelf makes the identical claim, where at least four of the nine listings there state the weaker and achievable "water-resistant". On a polyester backpack, water-resistant is the claim that holds; waterproof is a word with no number behind it.
The recorded price, among luggage
Details checked on October 7, 2026.
Who buys this one, among luggage
A large laptop and a pocket that sits against your spine, at one of the two lowest prices here
What buyers actually choose
Amazon reports what buyers took in the month before this page was last checked: at least 300.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Sources
Specifications: the manufacturer sheet for luggage and travel gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
11 × 15 × 7.25 in · 15.8 L · 1 lb 12 oz · double cable strap · interior panels
The only bag here to name its security construction as a system and to say where the slash-resistant panels are — inside, rather than somewhere on the bag.
Best for: A 16-inch laptop and a frame-top opening, where the security is built in rather than bolted on
17.3 × 12.6 × 7.2 in · 15.6 in sleeve · hidden pocket · USB port
A well-organized laptop backpack with one hidden pocket, a USB port and a fifth word for strong fabric — tear-resistant, which is not a security claim.
Best for: Organization and a charging port, with a pocket for a passport