4-layer Filter, 2 Outer & 2 Inner Non-woven. Nasal Adjustment & 3 Frontal Pleats Included, Ensuring a Better Fit to the Area to be Protected. Comfortable & Breathable Mask, Certified by Citeve, with Level 3 That Guarantees a Level of Particle Retention of 72% & a Level of Breathability Up to 23l & Min, Over 25 Washing Cycles. Suitable for the General Population; It is Not a Medical Device. See the Information Leaflet for Recommendations on Use, Care & Cleaning. Customisable Mask. Supplied in Polybag. Mask: 175 x 100 Mm | Tubular Rubber Bands: 180 Mm. Ppe Protection. Minimum Quantity: 1.