From the model

【Revolutionary Vacuum Compression Expertise】 The AirVault backpack options an built-in vacuum compression system with a built-in air pump, able to storing 18-20 spring clothes and decreasing cupboard space by over 50% (much more for down jackets). When totally expanded, the backpack achieves a powerful 70L capability, akin to a 24-inch suitcase.
【Versatile Air Pump with Multifunctional Options】The included multifunctional air pump handles deflation and inflation duties (good for gadgets like swimming rings)
【Your Supreme Journey Companion】The AirVault backpack comes outfitted with a TSA-approved mixture lock, USB 4.0 charging ports, a baggage attachment strap, thickened and widened shoulder straps, breathable supplies, and high-quality zippers.
【A number of Compartments and Pockets】Designed for versatility, the AirVault backpack contains a number of compartments resembling a moist/dry separation layer, water bottle pocket, energy financial institution pocket, thermal bag, anti-theft pocket, padded compartments for tablets and 19″ laptops, a multi-functional organizer, and the built-in vacuum bag. It is constructed to carry all of the necessities on your journey.
【Nylon Waterproof Materials】Crafted from sturdy Nylon with waterproof coating, the AirVault backpack incorporates a vacuum compression bag constructed from high-performance TPU materials that’s each odor-proof and waterproof. Its modern design, sturdy development supporting as much as 30kg, and multifunctional options make it a significant and sensible present for your self, your loved ones, or your mates.