Originally Posted by redburgundy
One ounce tubes? no problem.
4.3 and 4.6 ounces? no problem.
3 ounces? I can't find any 3 ounce toothpaste tubes.
Why not just put 2x1ounce tubes in your Zippy? I suppose as other posters have indicated you could also load up an appropriately sized bottle of KY.