This Bobble Filtered 18.5oz Water Bottle drops from $12 to $6 to $5.39 via code AFPACC10 at 24HourFitness.com. Plus, shipping is free!
This is the lowest price anywhere for this water bottle (it goes for $14 shipped at Amazon).
The cap has a carbon-based filter designed to remove contaminants from tap water. It comes in black, blue or magenta, is FDA -approved, and made in the USA.
Sales tax is charged in most states.