YUUNYSLEEP Uni-Sleep Newborn Baby Pillow - Prevents Flat Head, Baby Pillow, Head Shape, Side Sleeping Pillow, Prevents Rolling Over Uni-Sleep Pillow + Cooling Cover Purchased new on Rakuten in July 2025. Used 5 times. [How to Use] 1. Depending on the baby, it may take time to get used to the pillow. If the baby initially dislikes sleeping on their side, let them rest on the pillow after feeding, or let them lie down on it to get used to the feel of the Uni-Sleep pillow. As the baby becomes familiar with the pillow, they will start to sleep on it by themselves. 2. Just before the baby falls asleep, when their eyes are about to close, lay them on the Uni-Sleep pillow and gently pat their back. At this time, have the baby's hands and feet in a position as if they are hugging the pillow, and adjust the size so that the back is in close contact with the pillow, making it easier for them to fall asleep. (As they gain experience sleeping with the pillow, they will learn to fall asleep on their own.) 3. Place one of the baby's arms under the pillow and arrange the baby's posture as if they are hugging the pillow. The sound of the heartbeat and warmth felt by hugging the pillow will give the baby a sense of security and extend their sleep time. It also prevents the startle reflex, such as waking up in surprise. * There are individual differences, such as some babies being better off being placed on the pillow after they are completely asleep. Try various methods and find a way to put your baby to sleep that suits them. If the baby dislikes having one arm under the pillow, it is okay not to put one arm under the pillow. At first, let the baby get used to it in their favorite position.