Blackburn Outpost Elite Frame Bag Medium Short BlackThe Blackburn Outpost Elite Frame Bag is a waterproof, lightweight bag with welded seams. There is a water reservoir hose (sold separately) or battery cord port for easy access. The outside pock has drainage holes. The zipper pulls are anti-rattle. The Small model has 8 straps, all other models have 9 straps for mounting. The Small has no Internal Divider, all other models have Internal Divider. The Small has 3.37 Liter storage with Dimensions of 355.6x254mm and weighs 205g. The Medium Short has 3.65 Liters of storage, with dimensions of 406.4mmx279.4mm and weighs 246g. The Medium Tall has 5.15 Liters, with dimensions of 406.4x304.8mm and weighs 264g. The Large has 6.76 Liters, with dimensions of 482.6x330.2mm and weighs 306g.768686155321