Yes, the website does leave something to be desired. LOL. True, the wheels are 20" but the folded size difference between it and a 16" folder may not be that significant, but then again maybe it will be, what do I know? 20" wheels do have advantages though. Call/email them and I'm sure they'll be happy to give you the exact folded size.

Or you could go with Bruce's idea. $100 disposable bike. Can't go wrong with that. However, I would suggest dunking it in a vat of cosmoline first.