Spacious and Expandable Design: Our Vacuum Backpack Travel Bag with Pump offers an impressive expandable capacity from 36L to 55L through innovative vacuum compression, providing ample space for all your travel essentials while keeping the bag compact Smart Storage Solutions: This Vacuum Compression Travel Bag features multiple compartments, including a dedicated wet/dry separation pocket, ensuring organized storage for shoes, electronics, and other items, making it the perfect Carry-On Travel Backpack with Vacuum for any trip Enhanced Security Features: Designed as an Anti Theft Laptop Hiking Travel Bag, this backpack includes a secure anti-theft combination lock and a hidden zippered pocket, keeping your valuables safe from theft during your outdoor adventures or business travels Comfortable carrying options: Experience ergonomic comfort with removable straps, padded handles, and adjustable buckles, allowing you to switch effortlessly between hand, shoulder, or sling carrying methods, ideal for both casual outings and business trips Travel-Friendly Accessories: With its built-in luggage strap, this Expandable 36-55L business outdoor travel bag easily attaches to rolling suitcases, freeing up your hands while on the go and making your travel experience more convenient and enjoyable