"Hydrate hydrate hydrate. Your body is ___% water."
That's almost all you hear from health and fitness gurus. The catch for me, however, is that sometimes it's not super convenient to have water when you're always on the go. Disposable water bottles just create more trash, metallic water bottles taste like metal, and other bottles tend to spill or leak. I can't tell you how many times I've taken a sharp turn in my car, only to set forth a flood of water onto my floor.
Thus, I fell in L-O-V-E with the Camelbak Better Bottle. The Better Bottle features a bite valve attached to a straw, so there's no having to fight to get the last drop down your parched throat and no errant spills. The handle is designed to be carried with one finger or attached to your sports gear.
If you desire even greater ease of use, you can purchase the Hands Free Adapter (http://camelbak.com/Sports-
The Health and Beauty Surveyor
(Bags, Bottles, Misc)