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Large expandable travel backpack with laptop compartment and luggage strap

KW-Commerce

KW-Commerce Sinaliy 40L Expandable 17.3" Laptop Backpack 2 in 1 Accessories

SKU CH-JWMV-XPW89

A 40 L expandable backpack that fits a 17.3-inch laptop, adds 1.57 inches of extra capacity, and includes a luggage strap plus an anti-theft pocket

  • Expandable design grows to 40L capacity for extended trips
  • Padded compartment fits and protects a 17.3 inch laptop
  • Luggage belt slides over suitcase handle for hands-free transport
  • Hidden anti-theft pocket secures passport and wallet against theft
  • Water-resistant polyester fabric shields contents from light rain

Sinaliy 40L Expandable 17.3" Backpack

The Sinaliy backpack expands from a compact profile to a 40-litre capacity, fitting a 17.3-inch laptop in a padded compartment. Water-resistant polyester and anti-scratch fabric protect contents during daily commutes or weekend trips. A luggage belt and hidden anti-theft pocket add security for travel essentials. Two toiletry bags are included for personal-care items.

For travellers needing one flexible bag

This pack suits anyone who wants a single carry-on that grows for longer stays yet stays within personal-item limits when compressed. Commuters carrying a 17.3-inch device gain dedicated protection and quick-access pockets. Buyers who need a rigid frame, wheels, or a dedicated camera insert should look at other luggage styles.

Expandable 40-litre capacity decides fit

Unzipping the expansion zipper adds 1.57 inches of depth, turning a 6.7-inch-deep bag into a 40-litre hold for packing cubes, clothing and gear. When zipped shut the bag meets airline personal-item dimensions, so the expansion mechanism is the single spec that determines whether this pack matches your trip length.

Highlights

  • Expandable design grows to 40L capacity for extended trips
  • Padded compartment fits and protects a 17.3 inch laptop
  • Luggage belt slides over suitcase handle for hands-free transport
  • Hidden anti-theft pocket secures passport and wallet against theft
  • Water-resistant polyester fabric shields contents from light rain

Specifications

No published specifications for this item yet.

Questions about this item

What expansion depth does the 40L backpack add when unzipped?

The expandable zipper adds 1.57 inches of depth, taking the main compartment from 6.7 inches to a larger volume for extra gear.

How wide is the laptop compartment for a 17.3 inch device?

The padded sleeve fits laptops up to 17.3 inches and sits inside the main cavity that measures 17.32 inches wide overall.

How do you secure the backpack to a rolling suitcase?

Slide the rear luggage belt over the suitcase handle; the strap is fixed, so it cannot be detached or lengthened.

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