Nonwoven face mask 1) Comfortable,odorless 2) Form fitting design, 3) Soft,lightweight, 4) Latex free earloop 5)Non-irritating to skin 6) Permits air passage. Adult Type Face mask ( blue, green, white, pink, yellow ) 1- Premier elite type BFE≥99.8% PFE≥99.3% Delta P (H2O/cm²) 5.0 Resistance to penetration by synthetic blood (mmHg) 160 Flame spread class I 2- Premier type BFE≥98% PFE≥99.3% Delta P (H2O/cm²) 5.0 Resistance to penetration by synthetic blood (mmHg) 120 Flame spread class I 3-Regular type BFE≥95% PFE≥ 98.9% Delta P (H2O/cm²) 4.0 Resistance to penetration by synthetic blood (mmHg) 80 Flame spread class I Children type ( blue, green, white, pink, yellow ) same as premier elte type earloop length: 14.5x9.5cm