Large Capacity Expandable: The travel backpack is expandable and can hold items needed for 3~7 days of travel, accommodating three or four sets of clothes, shoes (with separate shoe bags), and other daily necessities. Perfect travel backpack for men and women. AIRLINE APPROVED: This carry-on luggage is sized to meet most airline carry-on size regulations, making it an airline-approved carry-on with a zipper closure to help you quickly get through security. Capacity: The travel backpack comes with four packs. Make your items neater and more organized. There is no doubt that this is a great travel backpack. If your clothes get wet, don't worry, the large compartment has a wet pocket on top to store a t-shirt or towel. [For Travel]: This carry-on backpack is airline approved so you can go wherever you want, it has a side handle that converts into a suitcase and a luggage strap on the back that can be placed on your suitcase, very convenient to carry. The breathable sponge mesh design on the back and shoulder straps helps with air convection, ventilation, and heat dissipation, which helps relieve shoulder pressure. This is a nice backpack for personal items. WORRY-FREE QUALITY]: Our weekend backpack is made of sturdy, ripstop and waterproof canvas, breathable shoulder straps, padded foam padding, adjustable chest straps, reinforced buckles all around, and stronger connections between the bags. The shoulder straps make the backpack more comfortable and durable, specially designed for travel, camping, and weekends.