Fabric: Polyester fabric Compartments: Internal wet and dry storage External dry storage for towels and sandy items Pockets: Water bottle pocket Exterior zip pocket for essentials Straps: Backpack straps Handles: Unique roll top closer with small handles Dimensions: 20" [H] x 11" [W] x 10" [D] /51 [H] x 28 [W] x 26 [D] cm Volume:37 L capacity Secret Sesh - Large Surf Backpack for Men