Salter 16 Soft Nasal Cannula inc 4 Ft Tubing - Soft Material in Both The tubing and facepiece - use with Oxygen Concentrator O2 – Perfect for Long-Term Oxygen Patients : Amazon.co.uk:
Nasal Oxygen Cannula 8m / 26.2ft, High Flow Soft Nasal Oxygen Cannula, Adult Soft Nasal Cannula for Oxygen Concentrator, Safe PVC Material