Accessories: The zipper is made of high – quality metal with smooth operation, ensuring a seamless opening and closing process without any worry about jamming or damage. The fasteners are made of high – strength plastic material, which is sturdy and durable. It can withstand the pulling force during daily use, is not prone to rusting, and adds to the overall quality of the backpack. ... https://www.feeslybag.com/category/laptop-backpack/15-inch-laptop-backpack/