A baby walker is a device that can be used by infants who cannot walk on their own to move from one place to another. Patents have been issued for baby walkers as early as 1851. Modern baby walkers have a base made of hard plastic sitting on top of wheels and a suspended fabric seat with two leg holes. A baby walker often has toys attached to the top to entertain the baby. It is designed for a child between 4 and 16 months.