my son is 4.5 and he still sleeps without one....occasionally he rolls over on ours...also I too used a rai pillow for him when he was an infant..definitely helped in shaping his head

A pillow is not really needed. Most babies will tend to move off the pillow during sleep. Once your little one is closer to two years they will develop the interest and inclination to use a pillow on their own. However If you wish to use a pillow choose a thin but firm pillow so that there is no possibility of suffocation.

for both my kids i have used rai pillow...very good and help in securing the roundness of the back head .

yes me too Priya.

I have never used a pillow. Only the baby pillows that are flat and are meant for straightening the head.