Nasal oxygen cannula-with CO2 line:

1.Made of clear,medical grade PVC.

2.Soft prong, Straight prong, Curved prong is available.

3.Color: green transparent, white transparent and light blue transparent.

4.Longer and thicker anti-crush tube fits tightly and is less likely to leak.

5.Length: with 2 m tubing, different length can be customized.