Repositioning is recommended for all newborns; every baby is at risk for developing Flat Head Syndrome (plagiocephaly). Because baby's skulls are soft, yet heavy and necks are weak, infants are vulnerable to developing these conditions in the first few months of life. This is why, proper movement and deliberate repositioning of your infant from birth is one of the key's to the healthy development of your baby. Tortle is a simple, comfortable beanie that is FDA cleared to help prevent and treat Flat Head Syndrome (plagiocephaly). Early detection and correct use of Tortle will ensure the best long term results. To properly use the Tortle, you must pull the beanie down as far as possible so the crown of the head is fitted into the top of beanie and ears are covered. If beanie is covering baby's eyebrows, you can fold the front of the beanie. Remember to let your Tortle grow with your baby and purchase the next Tortle size!