Infant Optiflow Junior Breathing Circuit. The RT330 Optiflow Tubing Kit is intended to deliver humidified respiratory gases to infant patients. It is designed for use with low/high flow oxygen therapy with nasal cannula and therefore, does not need an expiratory limb. The circuit is designed to deliver significant reduction in condensate. The optiflow junior cannula is designed specifically for the delicate anatomical features and flow requirements of neonatal and paediatric patient. It features adhesive pads to maintain cannula stability on the cheeks, soft-touch nasal prongs and breathable kink-proof and crush-resistant flexible tubing. UOM: 10/CS.