Hey guys, just curious if you all know of one that my friend could ride - he has cerebral palsy & can't balance at all on a standard two wheeler. He's looking for a trike, but it would have to have easy gearing. Arm control's aren't really an issue, but it has to be something easy to get in & out of. He does relatively well on a stationary, just at a slower pace & cadence. Thanks in advance!