These masks are intended to be used for protection against solid and liquid aerosols in wood, cement, glass working,textile,mining and construction environments.They are extremely durable and they have a soft and comfortable inner surface with an adjustable nose piece and secured head straps for a proper fit. This mask is designed with low breathing resistance filter media to increase user comfort. All FFP1 masks are to be used in situations up to 4 times the Occupational Exposure Level (OEL).