This innovative sleep positioner has several functions. It acts as a wedge that elevates baby's head and chest to prevent acid reflux and promote better digestion. It is also designed to keep babies on their back to significantly reduce the risk of SIDS. Finally the head support is made of an innovative Visco-Elastic material to prevent and discourage flat head syndrome. This definitely gives a piece of mind to caregivers and is a must have in baby's nursery.