1CE,ISO13485. 2.Made of PVC 3.Infant, Children and Adult size (XS-XL). 4.Sterilized by ISO. Nasal oxygen tube 1.Made of non-toxic PVC,be consisted of nasal tube,catheter and joint.2.Only for one time use,convenient.3.Suitable for adult,child,infant.4.Twin Nasal Tips provide maximum freedom to the patient and leaves the mouth free.(We also have single nasal tip one)5.Color Transparent,translucent ...