Despite the best efforts of Neonatal Intensive Care Unit (NICU) caregivers, vulnerable and fragile NICU patients are frequently exposed to noxious levels of noise from monitoring and respiratory equipment alarms, as well as from routine NICU care practices. Particularly detrimental to sleep and auditory development are patient exposures to high frequency noises that are specifically designed to alert NICU caregivers to important changes in patient status. This pilot study will help evaluate the fit, ergonomic design and the ease-of-use of a novel hearing protection system (special ear-muffs along with a unique attachment mechanism) specifically designed top diminish the transmission of high frequency noises to patients within the NICU, while allowing some transmission of low frequency sounds, such as a mother's voice.