1. With a separate laptop compartment, it can accommodate 15.6-inch laptops (or 15-inch, 14-inch and 13-inch laptops). With a spacious storage compartment, you can easily store daily necessities and electronic accessories. There are many pockets, pencil cases and key chains in the front compartment, so that your items are organized and easy to find. 2. Waterproof and wear-resistant YEATION high-density fabric can effectively resist sudden splashing and accidental scratching. 3. The honeycomb shoulder strap is designed to be comfortable and soft, with shock absorption and no stuffy sweat, and the S-shaped shoulder strap can effectively fit the shoulder without discomfort. 4. Safe reflection, safe travel at night, the design of the reflective strip in front of the cloth, reflecting the light at night, safe travel at night, 5. 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. 1. With a separate laptop compartment, it can accommodate 15.6-inch laptops (or 15-inch, 14-inch and 13-inch laptops). With a spacious storage compartment, you can easily store daily necessities and electronic accessories. There are many pockets, pencil cases and key chains in the front compartment, so that your items are organized and easy to find. 2. Waterproof and wear-resistant YEATION high-density fabric can effectively resist sudden splashing and accidental scratching. 3. The honeycomb shoulder strap is designed to be comfortable and soft, with shock absorption and no stuffy sweat, and the S-shaped shoulder strap can effectively fit the shoulder without discomfort. 4. Safe reflection, safe travel at night, the design of the reflective strip in front of the cloth, reflecting the light at night, safe travel at night, 5. 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.