CampinSam: Yup a 32" wheel.
Wallmart has bikes now with 32" wheels but this one was first. HERE is a thread I made about it shortly after finishing it.
It is an oddball size and you need to build your own tires for it. I am not 100% happy with the tire that is on there now but it should last a few hundred km. If you built a skinny road tire for it you could run it in a tall 29er frame like a new Oracle frame but with the current tire you are stuck with either a custom job like my frame or run a 36" frame with lots of extra leg over the tire. I would rather not sell the 32" wheel to someone who is not comfortable with the idea of building a new tire if the current one fails. It is actually the tire from the start of this thread re-shrunk.
I don’t guarantee any of my sewn together tires but will guarantee the wheels are well built and reasonably round and true (think ±1mm)