Expandable & Extra Large Capacity: This 50L carry on backpack airline approved expands to provide more packing space for clothing, shoes, and travel essentials. It fits overhead and under-seat compartments, meeting standard carry-on size for most airlines. Ideal travel backpack for men, women, weekend trips, and Europe vacations. Convertible & TSA-Friendly Design: This flight approved carry on backpack easily transforms from backpack to suitcase style for flexible use. The laptop compartment opens 180 degrees for smooth airport security checks. A luggage belt on the back allows for convenient carry on during international travel. Roomy Space & Shoe Compartment: Normal size 19.68x13x7.87 inches , Expanded 19.68x13x9.84 inches. Features a separate shoe compartment at the bottom, fitting sizes 5-12, and can also be used for toiletries or other items. Keeps shoes and belongings clean and organized. Multi-Compartment & Comfortable:: This carry on backpack features a sepa