Create the perfect backpack for all your travel needs with the NEW MATEIN Carry on Backpack. With a 40-liter capacity, this backpack is perfect for all your travel needs, whether you are exploring a new city or hitting the beach. Designed with a solid black pattern and made from durable polyester, this backpack is both stylish and sturdy. The backpack features an expandable design that lets you add more space when you need it, so you can pack everything you need for your trip with ease. The backpack also has a padded laptop sleeve and adjustable straps to ensure that your trip is as comfortable as possible.