Jet DesertFox explains the advantages of the GeiggerRig Hydration Engine over the Camelbak-type hydration bladders. The Geiggerig are known for the hydration and filtration systems which are compatible with other packs and can be easily cleaned and stored away when not needed. Thus, it is a more convenient bladder to use and maintain.

You can order this from Evike.com as they have this and other Geiggerig hydration products in stock.