Cannula Usage Instructions: 1. Lay your nasal cannula tube on a flat surface with the nasal barbs pointing toward you. (The curvature of the barb should be facing downward.) 2. Place one of the cushions under the tube with its groove facing up. (For best results, ensure the cushion is about 3/4" away from the nasal barb.) 3. Press the tube into the groove and place the cannula on your face as you normally would. 4. Enjoy true cannula comfort with no pain, no creases, and no indentations. 5. When replacing your cannula, just remove the Cannula Comfort Cushions from your existing cannula and apply to the new one.