About this item Lightweight and practical backpack: This backpack measures 30 cm x 14 cm x 44 cm. This laptop backpack has a 15.6 inch laptop compartment and an 11 inch iPad compartment, compatible with Thinkpad, Macbook Pro, HP, Dell and other laptops. The large inner compartment is convenient to store books, clothes, wallets and other daily necessities, and the additional inner compartment can hold an external hard drive, USB stick, mouse and more. Water-repellent fabric: Are you still worried about what to do on rainy days? Our backpack is made of water-repellent and durable PU leather, so there is no problem even in light rain or splashes of water. The surface of the backpack is hard like a turtle shell and does not deform. If you pack something in a backpack and hang it for 24 48 hours, it is in great shape, the absolutely perfect backpack. TSA combination lock: the backpack is equipped with a TSA anti-theft lock, you can set your own password, make sure that no one except you can open the backpack. (In the backpack there is a small instruction manual on how to change the standard number code. ); The key of the TSA combination lock is only TSA. It belongs only to the staff, which is convenient to open and check in an emergency. Back design of the backpack: The honeycomb mesh fabric on the back of the backpack protects your shoulders, neck and back, is soothing and breathable, not sultry and easy to spend in summer. On the back there are hidden pockets to store important passports and wallets. There is also a strap to attach the backpack to a trolley.