Echoing Sue’s question about leaving the vest behind for a few days, do other users have experience with this? I am debating the same thing for an upcoming trip. I will of course mask on the plane, bring my portable nebulizer etc but with the timing it could be hard to squeeze in vest sessions. I don’t want any set backs so just looking at risk vs rewards. Several days off then resume upon return. This being said for longer trips I would plan to bring it along.