Pediatric recommend that newborn babies sleep in a 3d curved pillow to help shape a good head shape and improve the flat head.Babebay baby pillows are fully scientifically designed and are good friends for your baby's sleep. Prevent Flat Head Syndrome -- Unique design for baby, soft and comfortable to use. The concave center in the middle is great for keeping your little one's head straight. Can be uniformly dispersed the pressure of the baby's head, protects the baby's neck and shapes a perfect head form.