Each piece of mask printed with EN149: 2001 / FFP2 / CE 0194 Specification: 1. Size: Top length 18.5 x height 9 x base length 9 cm　 2. Color: WHITE 3. Structure-4 layers a. Outside body layer: 75gsm non-woven fabric　 b. 1st inner layer: 50gsm cotton c. 2nd inner layer: 60gsm filter layer d. Inside body layer: 50gsm non-woven fabric e. Nose bridge: aluminum band with plastic house f. Suspension strap: PU (latex free) Features: 1. Conforms to CE0194 EN149:2001 FFP2 standard 2. Low breathing resistance with high filtration efficiency 3. Adjustable nosepiece and inner foam provide a custom seal 4. Can be folded flat for easier storage 5. Lightweight and humidity-resistant with hypoallergenic filter media 6. Low breathing resistant to maximize respirator service life