These silicone rubber masks offer large inhalation ports and a unique cartridge design to provide easy breathing. The exclusive corrugated exhale valve helps eliminate dead air, enhancing wearer comfort. The textured inner surface prevents slipping, while the wide inner flange forms a gentle seal that conforms to a wide range of faces. Mask sits low on the face to allow for better visibility in all directions. Cartridges can be attached in three different positions, maximizing compatibility with eye and face protection. The replaceable parts extend product life and maximize value.