This high-quality backpack is designed for students (elementary school students, high school students, college students) and ladies. this school backpack is the best choice for school, travel, and outing. the unique design makes our products more novel and outstanding, not only powerful, durable, and versatile. this Girls backpack has an oversized size of 47*30*14cm (18.5*11.8*5.5inch), and the large capacity will surely satisfy you. It can easily fit a 15.6-inch laptop. It is a must-have backpack for school, hiking, traveling, and outing. You will be surprised if you get the school bag.new USB interface design, free your hands and give away a USB data cable. the smooth and anti-theft slider will not explode or jam the bag, allowing you to easily open and close, and give a code lock. triangular reinforced backpack, sturdy and durable, easy to carry, buckle at will, durable and convenient. Trust us, you will love it! Instructions for use The product number is set to "0-0-0" when it leaves the factory. You can keep this code or set your own password. The setting method is as follows: 1: Press the direction of the arrow to hold the coding sleeve, turn the number wheel to the number you selected in turn, release the coding sleeve, and press the button to return to the normal position. 2: Turn the selected number into a random state, that is, the lock state. 3: Rotate the number to the password you selected to enable it.