-FeaturesFabric: Water repellent 400D polyester textile with coated backing for durability.Compartments: Two exterior zippered outer compartments.Internal organizer.Side water bottle compartment.Roll top.Straps: Padded adjustable shoulder straps.Volume approx: 33 Liter.Two rolls: 27 Liter.Mesh padded back torso support.Fleece lined sunglass compartment. - Made With Strong And Water-Repellent Polyester Material, The Rca Weld Roll-Top Backpack Is The Call For Traveling With Gear In The Great Outdoors. This Spacious Pack Has A Large Main Compartment, Two Exterior Zippered Pockets, A Side Water Bottle Pocket, And Even A Dedicated Spot To Stash Your Sunnies.