Features: McKesson Anesthesia Mask Adult, Large Adjustable inflation valve. Eliminates the possibility of Corneal Abrasion due to contour of mask; Requiring less facial pressure. Unique Ergonomic Shape fits all facial configurations for improved sealing capabilities. Benefit to clinicians include; Requires less hand pressure, reduces strain on hands, and prevents hand discomfort. Soft, pliable air filled cushion with and without an inflation valve. Versatility of size — Includes six standard sizes to properly fit all your patients needs. The clear choice for patient and clinician comfort. Packaged: 1 Per Pack, 20 Packs Per Case