The material used in the Ultralight mask is a four-way stretchâ, air-permeable technical fabric that allows the face to breathe in hot and humid conditions. The Ultralight Olive Green and Black comes with a Black/Silver Powa Elite valves and a Black/Silver unbreakable nose clip and carry bag. The Sand model comes with White/Gold Powa Elite valves and a White/Gold nose clip. The Hepa-Type sports filter is fitted as standard - the perfect PM2.5 filter for urban areas high in diesel particulates or hot, dusty conditions. As always, Respro is the original and best pollution mask with genuine filters and versatile sizing.