These are all over the place...online and in most LBSs I go to:



I don't see how having a cap at the bottom of a bottle makes it any easier to keep clean. Regular bottle, use it, when it gets grungy you put it in the dishwasher and then it's clean. What's hard about that? In fact, I find it is the caps and threads that are the dirtiest parts of a bottle...and the Clean Bottle has two.