Miles cannot sit on a normal bike seat without being strapped in, and his feet are not able to stay on the pedal to push without being strapped in. He requires an assistive device to be able to ride a bike and play with his brothers and other kids. 

Miles cannot sit on a normal bike seat without being strapped in, and his feet are not able to stay on the pedal to push without being strapped in. He requires an assistive device to be able to ride a bike and play with his brothers and other kids.