The FannyTop is a popular component that's featured with Eberlestock's J107, JP9, F4M and J79 packs. With a stow-away hip belt, the FannyTop uses its compression straps to attach to the Padlock (MOLLE/PALS compatible) webbing matrixes that adorn most of their packs. A great stand alone product, the FannyTop is hydration compatible (376905, sold separately, is recommended). When used in combination with a larger pack, you can stow your essential survival kit, water, etc. in the FannyTop, and simply detach from the main pack, then grab and go with your essentials. Technical InformationWeight: 1.1 lbCapacity: 300 cu inHydration Compatible: YesFeatures3 PocketsBelt Stowage SleeveHydration Compatible