Clear PVC allows for better visibility of the airway and inflated cushion creates a better seal. For use with Med-Rescuer bag valve mask. The universal connector allows for use with other bag valve masks. Mask is 100% latex free and disposable. This model available in large adult size, see 1505 for adult size, 1510 for child size, 1520 for infant size and 1525 for neonate size. Case of 20.