Well-balanced and lightweight (140g), providing optimum wearer comfort Available in three sizes, creating a tailored fit profile, superb fit and comfort for any workforce. Fully adjustable head harness, offering easy fitting and adjustment, with a robust and trusted fit when in use. Low profile shape to maximise the field of vision and allow exceptional compatibility with other PPE. Alpha Sentinel filters are fitted with a simple connection which easily clicks into position. Premium quality elastic strap provides a secure high comfort fit and retains mask positioning. The large exhalation valve reduces heat and moisture build-up, providing low breathing resistance. Easily cleaned and maintained with spare parts available. Quantitative face fit adapter available. Respirators are supplied with user seal check covers, which double as particulate retainers for combination filter.