Just a quick heads up; Woot is selling the
Maxpedition 12 x 5 water bottle holder for $25 right now. I have a couple of these and really like them. If you know Maxpedition you know how bombproof their stuff is and how well made. A quick Google search failed to turn up anywhere else that has them for much under $45...IIRC I paid $40 for mine a few years ago.
No affiliation with Woot beyond being an admitted Woot junkie!
Pretty good deal if you a use for one.