The backpack is made of durable polyester material. The large opening on the top allows for easy access to the back of the laptop and main storage from the side. The upper part can store small items such as mobile phones and other personal items, and the interior has a 3D mesh pocket. You can remove the net from the bottom of the front to store your shoes. The shoulder straps and back panels are cushioned with EVA material to reduce the load on the body. Inlaid details enhance functionality (Reflective pull for nighttime visibility, stretch bottle pocket, stretch chest belt)