Features Enter your model number to make sure this fits. Naylon / Polyester Product Name : National Geographic Technical Backpack NP1403 Fabrics - Upper : Nylon 100% / Lining : Polyester 100% / Color : Navy / Khaki Size : 35 x 18 x 61 cm / Capacity : 35L Get back to nature with our National Hiker series. Whether you're hiking under the trees or on a mountainside, enjoy nature in comfort and style with our Nature Hiker series. With elastic water-bottle pockets and a zip pouch, this backpack is ergonomically designed for hiking. With the iconic National Geographic logo, you can represent your love of adventure wherever your workout takes you.