Maxpedition Rollypoly Folding Backpack: Folded size: 4.5" long x 4.5" wide x 2" thick. Main: 16" x 11" x 2" with drainage grommet at base. Inner pocket: 7" x 5". Total volume: Approx. 350 cu. in. Belt: Integral closed loop, fits up to 3.5" belt. Hydration: Accommodates up to 100 oz. reservoir. Shoulder straps: Included, adjustable in length. Attach: 3" TacTie (sold separately), Siamese SlikClip (included). The ROLLYPOLY Folding Backpack presents Maxpedition sequential folding pouch in an ultralight backpack format, weighing in at only 8 oz. empty! The body of the pack is made from foldable lightweight 420-Denier coated nylon fabric while the base is made from abrasion-resistant 1000-Denier coated nylon fabric. Front panel is gusseted near the base allowing contents to expand away from wearer's body. Dual shoulder straps of 0.75" webbing are used to cinch the pack's opening and are adjustable in length. The Rollypoly Backpack is an excellent choice for short outdoor or urban excursions. Fit wallet, keys, a jacket, some snacks, so you are not burdened by a full-size assault pack while enjoying your day off. Color: Black.