The CPR MICROMASK features a positive, one-way, nonrebreathing valve complete with 3M Filtrete filter. This valve has a large opening to allow less restrictive rescue breathing. Made of materials which remain flexible over a wide range of temperatures, allowing it to conform to facial anatomy and provide a better seal, even under extreme conditions. The dome is manufactured from clear plastic and may be used on adults, children, and infants. Fold-down styling makes for a low profile package. Each includes a single use disposable valve, a pair of nitrile gloves, and a durable, blue nylon belt pouch.