... mouth. o Reusable. Item name oxygen maskApplicationsMedicalDescription An oxygen mask provides a method to transfer breathing oxygen gas from a ... the nose and mouth (oral nasal mask) or the entire face (full-face mask). They may be made of plastic, ... silicone, or rubber. silicone mask ,reusable, size# 0, small infantsilicone mask ,reusable, size#1, large infantsilicone mask ,reusable, size#2,small ...