Isolette, a trademark for a self-contained incubator unit that provides a controlled heat, humidity, and oxygen microenvironment for the isolation and care of premature and low–birth weight neonates. The apparatus is made of a clear plastic material and has a large door and portholes for easy access to the infant with a minimum of heat and oxygen loss. A servocontrol mechanism constantly monitors the infant’s temperature and controls the heat within the unit.