Abstract: An adjustable pediatric incubator nest includes multiple pieces which may be selectively arranged by a caregiver to protectively partially enclose a pediatric patient on an upper support surface thereof without impeding caregiver access to patient. A resilient base member receives a pair of resilient. foam side wall members in a caregiver selected position to cradle a specific patient. Hook and eye complementary type securement features may be used, together with a fabric covering for the resilient base. The top of each side rail includes slits for the placement of smaller diameter patient treatment tubes or lead lines, to facilitate technical support of the patient in an intensive care environment. Segments formed across the top of the side rails between adjacent slits may be selectively cut out for the placement of larger diameter tubes.