Original Portable Hydrogen - Alkaline Flask - Water Filter Replacement Cartridge<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>These filters are made all manufactured in Asia and no seller. has anything special.</li><li>Life Span for this Filter is dependent on usage and hardness of the water filtered.</li><li>These fit all alkaline water flask</li><li>These are common and not from a specific vendor.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/316kIbLJXAL.jpg" noproxy>