Extremely light! This backpack stores small so it is easy to put in your suitcase! Never Used. NWT. Dimensions: 18"H x 8.5"W x 7"D. Capacity: 13L From the LL Bean Website: Built from durable, superlight 75-denier recycled polyester. Padded, breathable foam shoulder straps Generously sized zippered opening allows easy loading and unloading. Comfortable chest/sternum strap. Two side mesh water-bottle pockets. Features an internal stow pocket so you can stuff it into a tiny package for travel. Lightly padded back panel.