It rolls on four
EVA foam filled wheels with 12 ″ wheels in the back and 9 ″ wheels in the front.
The Gaan model rolls on three large
EVA foam filled wheels that are 12 ″ according to the Muv site.
Not exact matches
It roll on four
EVA never - flat
foam filled wheels with front swivel wheels that can be locked straight for rougher terrain.