1. Customized Oxford fabric is selected, and the fabric is blended with scientific and technological fibers to achieve lotus leaf water repellent effect, with first-class waterproof performance and good air permeability. 2. Breathable shock-absorbing shoulder strap design The backpack shoulder strap is designed according to ergonomics, which is thickened and shock-absorbing, and the bee net is breathable to prevent sweltering and relieve shoulder pain. 3. Convenient USB interface and headphone jack design-USB rechargeable university backpack, built-in USB charger outside, built-in charging cable inside, so that you can charge your mobile phone more conveniently while walking. Please note that this backpack does not include the charging treasure itself, and the usb charging port only provides a convenient charging method. 4. Large-capacity design, internal/auxiliary bag, backpack multi-compartment design, which can easily accommodate more items and facilitate travel. Independent computer compartment bag can accommodate 15.6-inch notebook computers, and the items are stored neatly and orderly; External multi-layer zipper bag, convenient to store all kinds of small items. 5. Back tie strap Convenient travel, back tie strap design, greatly improving the ability to travel conveniently. 1. Customized Oxford fabric is selected, and the fabric is blended with scientific and technological fibers to achieve lotus leaf water repellent effect, with first-class waterproof performance and good air permeability. 2. Breathable shock-absorbing shoulder strap design The backpack shoulder strap is designed according to ergonomics, which is thickened and shock-absorbing, and the bee net is breathable to prevent sweltering and relieve shoulder pain. 3. Convenient USB interface and headphone jack design-USB rechargeable university backpack, built-in USB charger outside, built-in charging cable inside, so that you can charge your mobile phone more conveniently while walking. Please note that this backpack does not include the charging treasure itself, and the usb charging port only provides a convenient charging method. 4. Large-capacity design, internal/auxiliary bag, backpack multi-compartment design, which can easily accommodate more items and facilitate travel. Independent computer compartment bag can accommodate 15.6-inch notebook computers, and the items are stored neatly and orderly; External multi-layer zipper bag, convenient to store all kinds of small items. 5. Back tie strap Convenient travel, back tie strap design, greatly improving the ability to travel conveniently.