Great Water Bottle w/ Tracking

So, I figured I'd let you guys know of a really cool water bottle that tracks how much water you get in.  It holds 24oz, but only has a line up to 20oz, but the cool thing is that there is a counter that you slide over when you finish drinking one. It counts up to 6.  Comes in a lot of colors too and is pretty cheap on Amazon.

You can look here: Thermos Water Bottle