... airway. made of high quality medical grade silicone rubber, 2, from size 1 to size 5 3, independent package Productssilicone ... rubber Laryngeal mask airwayMaterialMedical grade silicone rubberFeatures1. Made of ... high quality medical grade silicone rubber, supreme resilience, inert.2. Various of specification. From size 1to size 5.3. ...