The CPR Micromask features a positive, one-way, non-rebreathing valve complete with 3M Filtrete filter. This valve has a large opening to allow less restrictive rescue breathing. This mask features a cushion inflation tube which allows the rescuer to adjust the cushion to the desired shape and firmness. The CPR Micromask will remain flexible over a wide range of temperatures, allowing it to conform to facial anatomy and provide a better deal, even under extreme conditions. The mask’s dome clear plastic construction allows accurate victim monitoring. The CPR Micromask can be used on adults, children and infants.