Designed for use with all types of manual and automatic ventilation resuscitators, where a single-patient use device is preferred to reduce the possible risk of cross-contamination. Made of Medical Grade PVC, they are available in 3 sizes to suit a complete range of patients from new born to large adult. This size is designed for adults. Transparent, raised dome allows for easy visualization of the patients skin color and to monitor for signs of vomitus, blood or other body fluids. Their ergonomic design and flexible material provide superior mask-to-face seal.