NP 303 protective half face mask is a mask used to protect against a variety of respiratory hazard. Economically and east to use half mask, air-purifying respirator is maintenance-free. It's specially made design for facepiece and soft durable pliable rubber material It is soft and light and very suitable for wearing. It had an elastic headband to make it fit to the head perfectly and make it easy to wear and release. It is use to protect against dust, corrosive smell and other environmental air pollution.