Use the larger support for infants, or use both supports for newborns! Protects baby'''s head from bumping against surfaces in stroller carraige. Reduces size of car seat, supports head and allows a snug comfortable fit for infants. Gives baby comfort while lounging. Gives newborn the security of a smaller area, although resting in a large crib. Protects head while keeping baby in upright position in swing. ` Protects baby's head from bumping against surfaces in stroller carraige. Reduces size of car seat, supports head and allows a snug comfortable fit for infants. Gives baby comfort while lounging. Gives newborn the security of a smaller area, although resting in a large crib. Protects head while keeping baby in upright position in swing.