But one packaging design thinks out-of-the-tube  Mentadent's stand-up pump (Mentadent Advanced Whitening, Mentadent Crystal Ice).
They haven't figured out a standup pump yet.
mnli hypothesis: They haven't figured out a standup pump yet. premise: But one packaging design thinks out-of-the-tube  Mentadent's stand-up pump (Mentadent Advanced Whitening, Mentadent Crystal Ice).