This expandable travel backpack provides a flexible packing capacity with up to 45l of space when expanded, allowing you to adjust storage to your trip length. When unzipped, it accommodates clothing, a packing cube set, toiletries, a makeup bag, a camera bag, and other gear while still aligning with typical carry-on size guidelines for many airlines. The bag features a convertible design with hideaway padded shoulder straps that can be tucked into a back panel, letting you switch between backpack, briefcase, or duffel configurations for different settings. A luggage strap on the back is designed to fit over the handle of a rolling suitcase, making airport transitions smoother. Weighing about 2 lbs., it remains relatively light despite the expanded capacity, and the shoulder straps are adjustable with a ventilated back panel for comfort on longer carries. The front compartment provides quick access for small items like a phone or headphones, and the interior includes compression straps to keep contents organized and stable. External compression straps help create extra vertical space and reduce shifting of items, while durable stitching and lockable zippers add resilience. The outer fabric is water resistant, with sturdy construction designed to withstand varied travel conditions. Size: extra large. Color: Black. Material: Polyester.