.Lenovo laptop backpack. Based on the design, it is likely the Lenovo 15.6" Laptop Everyday Backpack B515.
It is made from water-repellent and tear-resistant materials.
It has a spacious main compartment that can fit laptops up to 15.6 inches.
The backpack features a quick-access pocket and two side pockets for additional storage.
The straps are adjustable, and the fabric is breathable for comfort.