Outdoor Products Canyon Weather Defense Backpack, 31.5-Liter Storage, Smoked Pearl 31.5-liter all-weather backpack constructed of water repellant Weather Defense fabric; ready for hiking, camping, fishing, and more Two zippered internal compartments, including space for 2-liter hydration bladder (sold separately) Comfortable, padded shoulder straps are fully adjustable and include a sternum strap for added stability Mesh pouches on each side feature drawstrings to hold water bottles, phones, and camera lenses Measures 13 x 20.1 x 6.1 inches and weighs 2.27 pounds; backed by the Outdoor Products Plain + Simple Lifetime Guarantee