BOPAI Intelligent expandable large Smart 15.6 inch Backpack Travel Friendly Water Resistant Anti-Theft Laptop Rucksack…
Amazon.com Price: $169.98 (as of 10/04/2023 00:22 PST- Details)
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INTELLIGENT INCREASE DESIGN – This backpack has smooth zippers on the back side. Once pull on the intelligent zipper, the invisible compartment will show up and equipped with extra 50% of space. .
PORTABILITY – The back sleeve design allows the backpack to slide over the luggage handle for easy mobility during traveling.