Crescent Womb The Infant Support Device New without box. It attaches to crib. Reduce Pressure to prevent Plagiocephaly and improve comfort. Why? There is a 1 in 2 chance your baby will develop Flat Head Syndrome. Plagiocephaly is caused by excess pressure on your Infant's head. How? The Infant Support Device reduces pressure and soothes your Infant. Preventing risk of Flat Head Syndrome and Positional Plagiocephaly. Breathable, ergonomic mesh gives comfort amd peace of mind by mimicking the feeling of being held.