I own a Piccolo, too. I use a large soft duffel bag to both store and transport it. If I were to ship or use it in a baggage section of a commercial plane or train, I would spend some money on the best-and hardest-type of suitcase that I could find and fits within (or closest to) the roughly 62 linear inches that these companies require it to be. I might have to take the seatpost, fenders, rack, or even the pedals off to fit it within the compartment, but I am willing to do so. The wheels are another thing entirely. I like to keep as much of the bike together as possible. Boxes are not acceptable to me except as an emergency (unexpected purchase of bike at the visiting location) or one time use.