The choice of equipment for the administration of anesthesia depends to a considerable extent upon personal preference. Underlying factors must guide this choice, however. Equipment is suited to the individual patient, with especial care to avoid resistance, dead space, fatigue, and trauma, since all of these insults are easily imposed upon small patients. As we have had good experience in pediatric anesthesia with the Ambu valve and the results were satisfactory, we report with discussion of references.