Features: Expandable backpack features vacuum compression technology and a storage system, offering clothing capacity with travel friendly laptop compartment for efficient travel organization. Organized with main compartments, hide pockets, dry wet separation bags, and a padded laptop sleeve, this anti theft backpack combines locks and ergonomic shoulder strap for comfort. Great for frequent traveler, outdoor adventurers, and busy professionals needing airport routines or day trip. Suitable for securing onto luggage via universal strap during transit, gym with ventilated wet pockets, or rainy commutes thanks to waterproof lining. Ergonomic memory foam shoulder strap and weight transfer backplate minimize fatigue, while zippers maintain smooth operate even when fully loaded. Specifications: Component: Oxford fabric Optional Color: As picture shown Size:approx. As picture shown Quantity: 1set Package Includes: 1pc Expandable Vacuum Compression Backpack 1pc USB Cable 1pc Vacuum Pump note: Please allow 1-3cm error due to manual measurement. please sure you not mind before you bid. Due to difference between different monitors, the picture may not reflect the actual color.