CamelBak Bottle with Bite Valve

I found these CamelBak bottles very easy to use.  Even though I only can use one hand, I can open and close them using my teeth on the plastic handle.  This helps when I am filling and emptying the bottle.

Here is more about the product:

Amazon Product Description:  The CamelBak Better Bottle represents a new standard of performance and convenience in re-usable water bottles. Available in multiple colors and in three sizes--1 liter, 0.75 liter, and 0.5 liter--this innovative bottle is also BPA- and Phthalate-free. The bottle's integrated handle makes it easy to carry with the crook of a finger or clip to a backpack with a carabiner. CamelBak's Big Bite Valve offers a proven design that contains no moving parts--just bite and sip for easy hydration. The cap fits most other bottles and the Better Bottle attaches to most water filters and fits in most cup holders. It's dishwasher safe.

Amazon sells these, please follow this link:  here