Many hospitalized infants can develop a flattening of the back or sides of their head. This condition develops gradually when an infant's head rests on a firm or semi-firm surface for a prolonged period of time. Premature infants are more likely to have a positional head shape deformity because they may spend longer periods of time in a crib. Infants participating in this study will be randomly assigned to either standard treatment, which is a moldable positioner device, or to a cranial cup device and moldable positioner for positioning. The purpose of this prospective single-blinded randomized clinical trial will be to evaluate the effectiveness of the cranial cup in preventing positional head shape deformity in the NICU patient population.