The Startle Backpack is a 100% polyester backpack with one large main compartment, a laptop sleeve (fits most 15”/ 38 cm laptops), and an internal organizer. It also features external zip pockets, stretch mesh water bottle pockets, and ergonomic padded shoulder straps. Measuring 43.18 L x 29.85 W x 13.97 D cm, the Startle Backpack has a 21-liter capacity.