<ul><li>EXPANDABLE 45L CAPACITY: Unzip to expand space by 40% (from 28L to 45L). Functions as a slim daily office bag or expands into a 20-inch travel suitcase alternative for business trips.</li><li>17.3-INCH LAPTOP PROTECTION: Dedicated padded compartment fits large laptops (up to 17.3 inches) securely. 180° opening design makes airport security checks and packing effortless.</li><li>SMART &amp; ORGANIZED STORAGE: Features 7+ pockets including a dedicated Wet/Dry Separation Pocket (Liquid Pocket) for toiletries, mesh organizers for clothes, and hidden anti-theft pockets.</li><li>BUILT-IN USB CHARGING: External USB port allows you to charge your phone while walking (power bank not included). Perfect for travelers and students on the go.</li><li>ERGONOMIC &amp; DURABLE: Made of splash-resistant and scratch-proof fabric. The back features a breathable honeycomb mesh design with shock absorption to protect your spine and reduce sweat.</li><li>TRAVEL-FRIENDLY DESIGN: Includes a sturdy luggage strap to fix the bag onto your trolley case handle, relieving shoulder stress during long travels.</li></ul>