Great backpack with lots of storage. Used for a year pre-pandemic and I no longer need. The description says up to 15.6 inch laptop but I'm sure it can hold up to 17". Dimension: 17.7" x 11.8" x 5.1" • This bag is designed with dual SBS zippers, which occupies the second largest share in global zipper market. More tough than your expect. • Made from waterproof, scratch-resistant, anti-tear special nylon fabric, and breathable, wear-resistant microfiber synthetic leather. Comes with a high-density waterproof cover. Double water-resistant when used outdoors. • USB port for charging. Slide your power bank into the backpack and free your hands! • Keep valuable items secure with a hidden anti-theft design. A luggage belt lets you pull your suitcase with one hand for easy travel. Two side pockets hold personal belongings like a water bottle or umbrella. • It can hold 15 inch laptop and size below.