Product featuresfolded 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. empty weight: 8 oz belt: integral closed loop, fits up to 3.5ČŘĚ belt hydration: accommodates up to 100 oz. reservoir shoulder straps: included, adjustable in length attach: 3” tactie (sold separately item 9903), siamese slikclip (included)the #0230 rollypolyŚ® folding backpack presents maxpedition’s 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 wearers body. dual shoulder straps of 0.75ČŘĚ webbing are used to cinch the pack opening and are adjustable in length. the rollypoly backpack is an excellent choice for short outdoor or urban excursions, fits wallet, keys, a jacket, some snacks, so you are not burdened by a full-size assault pack while enjoying your day off.rollypoly® is a federally registered trademark of edgygear inc.