Medicaux solutions is a leading manufacturer of Oxygen Nasal Cannula . It carries three  sizes  Adult, Child and Infant. During the process we use high quality medical grade PVC . generally it comes in tube Size is 2mtr. and outer  Inner Dia. 1.26mm , Dia. 2.80mm. Oxygen Nasal Cannula comes in three channel safety tubing, light material , soft, anatomically curved to fit upper lip curved  and 100% latex free.