Features:
Venturi Mask Adjustable Oxygen Venturi Mask .
Made of medical grade PVC , non-toxic, non-pyrogenic .
High transparent , clear and soft vinyl for patients' comfort .
Adjustable nose clip assures comfortable fit .
Optional latex-free elastic strip , oxygen concentration is 24%~50% .
Two diluters for concentration selection ,green and white .
Four sizes ,suitable for adult and child and infant .
CE&ISO certificated ,EO gas sterilized ,for single use only .