This practical backpack offers 18 liters of storage space for everyday essentials. Its polyurethane coating helps protect contents from moisture, while thoughtfully designed pockets make organization easy. Features: -18-liter capacity -Self water bottle pocket -Slip-in interior pocket -Polyurethane-coated construction for added moisture resistance Composition: -Shell: 100% polyester with polyurethane coating -Lining: 100% polyester with polyurethane coating Dimensions: -15.5 in x 11.5 in x 4.5 in