It increases comfort during breastfeeding and feeding with a bottle, as well as when the baby is lulled to sleep in a parent's arms. You can put the pillow in the form of a sleeve on your forearm to comfortably and safely lie down the baby in the classic position for nursing. Age: 0+ Recommended for ages 0-2 and beyond. It can be used as long as fits your child properly and comfortably. Not a safety device, for comfort only. Do not leave child unattended while using.