This Hape UK roller rattle can follow a baby through a number of development stages. From early focus, through grasping and object manipulation all the way to object tracking and prediction.
The rollers are set slightly off centre so that if it rolls away from a little one they'll have to follow its erratic path. It's a great (and fun) way to encourage little ones to explore their environment and learn to interact with objects.
Suitable from birth onwards.