AMSure® Nasal Oxygen Cannulas provide low to medium flow oxygen delivery and are designed with soft and pliable prongs which are ideal for patients who require long-term oxygen therapy. Soft and flexible nasal prongs enhance patient comfort. Over the ear design allows for complete freedom of movement. 7 ft. kink resistant star shaped lumen tubing ensures uninterrupted flow of oxygen. Non-Sterile. Latex Free and BPA Free.