Because he is to big for 12", 16", and 18" bikes there to small but have training wheels. He needs size 18 or 20" with training wheels. But I cannot find it anywhere online a bike that is 20" or even 18" but with training wheels. Hes serverly autistic, hes 9 yrs old, and just learned how to ride one without assistance but now hes to big for his bike. Its gone now and he would love a new one. Its hars to find. Hes 115lbs a big boy so I have to find one right for him and big enough.  

Because he is to big for 12", 16", and 18" bikes there to small but have training wheels. He needs size 18 or 20" with training wheels. But I cannot find it anywhere online a bike that is 20" or even 18" but with training wheels. Hes serverly autistic, hes 9 yrs old, and just learned how to ride one without assistance but now hes to big for his bike. Its gone now and he would love a new one. Its hars to find. Hes 115lbs a big boy so I have to find one right for him and big enough.