Lastchance et al,
Here's a couple pics of what I use for carrying water bottles. It's from "OR Products". I bought 'em at Eastern Mountain Sports. They have a drawcord at the top to keep the bottle from falling out, and a vertical velcro fastener for hanging from my wader belt.WtrBtlHolder2.jpg WtrBtlHolder1.jpg
There's something like it on the Outdoor Products website:
Outdoor Products H2O Bottle Bag
And Altrec.com has something similar:
Ultimate Direction Sport Bottle Holster