I have the same question...that being, can you safely check the cycler ? I have a large piece of luggage that the cycelr would fit in and thinking of getting some eggshell foam and wrapping the cycler with it. I would have a difficult time lifting it into the overhead bin, so that is why it would be easiest for me to check it. I know I seen someone talking about it fitting in the overhead bin without a problem.Clinic nurse said she would give us a letter to assure that it is medical equipment and the airlines should treat it with care.Anyone have an answer?