The Snag Backpack is a 100% polyester backpack with one large main compartment, an external bungee cord, & an internal organizer. It also features a laptop sleeve (fits most 15 inch/38 cm laptops), a stretch-mesh water bottle pocket at the side, & straight-cut padded shoulder straps. Measuring 45.7 L x 27.9 W x 17.8 D cm