Amazon.com: Bagsure Travel Backpack Carry On Backpack 42L 。?Large Capacity Backpack for Multi-Purpose Travel： Experience stylish travel with this spacious 42L backpack, perfect for 3-7 days of essentials. Measuring 20x14x7 inches, it\'s ideal for adventures like travel, business trips, camping, and cruises ?Flight-Friendly Carry-On Backpack：This backpack is designed for effortless travel, transitioning smoothly from backpack to suitcase with padded handles. The convenient luggage strap allows for easy stacking on suitcases ?Durability Meets Anti-Theft Protection：Crafted from durable, water-resistant polyester and scratch-resistant materials, this backpack boasts reinforced stitching and a metal double zipper for longevity. An anti-theft lock adds an extra layer of security ?Comfortable & Versatile Shoulder Straps：The breathable sponge mesh back panel and padded shoulder straps ensure airflow and ventilation, alleviating shoulder stress. The unique hideaway design allows the straps to be stored in the zippered back panel ?3 Packing Cubes + 1 Shoe Pocket：Streamline your packing with three packing cubes and a dedicated shoe pocket. The shoe pocket keeps shoes separate, and the built-in USB port (charger not included) lets you charge devices on the go