Easy to Use Water Bladder
If you are in the market to replace your gross reservoir, you might have some questions for your would-be replacement:
Does it hold water? Yes.
Is it easy to fill? Yes.
Is the bite valve pleasant to drink from? Yes.
Do rainbow colored unicorns burst forth to wage war against flaming gerbils every time I open it? No.
Everything you need from your water reservoir, and no supernatural creature problems. What more could you ask for?