Coming in four sizes and containing a one-way valve, these latex-free masks provide a simple way to deliver medication. Each device is constructed for improved patient comfort. They are produced in a variety of sizes in order to offer an excellent fit. The one-way valve does not restrict airflow, but facilitates speedy and accurate medication delivery to the patients. The option of tidal breathing to improve aerosol delivery is provided by the Pocket Mask. This is useful not only when dealing with adult patients but also children as well. These devices are further enhanced with silicone of a high quality.