Type IIR mask, in light blue color, suitable for blocking particles from breathing, speaking, sneezing, and coughing so that the person wearing it does not transmit them, which is why it is mainly used by healthcare professionals in surgeries, clinics, and hospitals. They include a splash-resistant layer for protection against blood and other bodily fluids. They are tested in the direction of exhalation (inside out) and take into account the effectiveness of bacterial filtration. They are intended for use to protect others from the user who transmits infection.