1. EN149:2001+A1:2009 FFP1 NR approved 2. Duck Bill type -Foldable design and easy carry / storage. 3. Against solid and liquid aerosols according to EN149ï¼2001. 4. Soft edges can fit different facial shape with minimum leakage. 5. Smooth PP inner layers provides smooth lining and comfortable feeling. 6. Low breathing resistance and long life time for use. 7. Recommend application: hospitals, disease control and others.