This adult cannula’s 4.5 m (15 ft) supply tube gives you comfortable movement around a room and into the next without repositioning your oxygen machine. Longer tubing does introduce slightly more resistance and more tube to manage – as a rule, choose the shortest length that covers your daily movement, and use oxygen extension tubing for occasional longer reach. Replacement guide: cannulas are single-patient consumables. Replace every 2–4 weeks with daily use, after any illness, or when the tubing discolours, stiffens or the prongs lose shape.
