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Black expandable travel backpack with USB port and TSA-friendly laptop compartment

Mosiso

Mosiso 17-17.3 inch 40L Expandable Travel Backpack 2 in 1 Accessories

SKU CH-J1S5-H4B0N

Expandable 40L travel backpack fits 17 to 17.3 inch laptops, opens 180 degrees for TSA screening, and includes a USB pass-through port

  • 40L expandable capacity fits 17-17.3 inch laptops
  • 180-degree main compartment opening simplifies packing access
  • Flight-approved dimensions 18.50 x 11.81 x 7.48 inches
  • Hidden anti-theft back pocket secures valuables
  • USB port enables convenient device charging

17-17.3 inch 40L Expandable Travel Backpack

This 40L expandable travel backpack fits 17 to 17.3 inch laptops and meets airline personal item requirements. It functions as a 2-in-1 accessory for travel, commuting, college and work. The main compartment opens 180 degrees with wet and dry zippered pockets, plus two front zipper pockets for organisation.

Travellers needing carry-on capacity

Suits travellers who want a single bag that expands from 7.48 to 9.84 inches depth for extra volume while staying flight-approved. The hidden back pocket secures passport and phone against theft. Not for buyers who need a dedicated camera insert, a hydration bladder sleeve or a rigid frame for heavy loads.

Expands to 9.84 inch depth for 40L total volume

The single specification that decides fit is the expanded depth of 9.84 inches, which determines whether the bag stays within your airline's personal item limits when fully packed. Dimensions are 18.50 x 11.81 inches in both standard and expanded modes.

How it compares

Measured against everything we stock in 2-in-1 Device Accessories, at today’s prices. Recalculated every night.

Price $49.99
Cheaper than about 60% of the 7,473 comparable items (median $56.99).

New to this? Buying a laptop with crypto, start to finish — what to check, what it costs to pay, and what is never asked for.

Specifications

No published specifications for this item yet.

Questions about this item

What does the 40 L capacity include and is anything sold separately?

The pack ships as a single 40 L unit with main compartment, two front zip pockets, wet/dry zippered pockets and a hidden rear security pocket; no extra accessories are required.

How do I decide between the standard and expanded sizes?

Standard depth is 7.48 inches; expanding to 9.84 inches adds room for bulkier items while the 18.50 x 11.81 inch footprint stays within airline personal-item limits.

What does the 180 degree opening mean when I am packing?

The main compartment opens flat to 180 degrees so you can load clothes, a 17-17.3 inch laptop and gear without folding the bag, then zip it shut for travel.

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