Review (4/5): Be aware this is LARGE. Very large. (Read on.)
I was looking forward to using this pump, rather than taking the cover off the Listerine bottle every time to use it. Although the items was "as described" (which had no dimension listed, only that it fit either the 1 or 1.5 liter bottle of Listerine ONLY) I had no idea how HUGE this would be, once attached to at least a one liter bottle. The pump goes approx 2 inches above the lip of the already large bottle, with no options for use on smaller sized bottle. I already had a 500 ml bottle, which is about as large as I'd want at the bathroom sink, but I had to go out and find a liter bottle (or larger) in order to use this. Had I been able to purchase one that fit the 500ml (1 pint) bottle, I would be far happier. To add insult to injury, Amazon prime wouldn't sell me the 1 L bottle. Once I tried to purchase it, the product became a Prime Fresh product, which is a service I don't use. Just be aware, this isn't a dainty bottle on your bathroom counter sink. Once attached, it looks like a commercial sized bottle. Would not re-purchase.