Material:

1st layer: 20gsm PP non woven

2nd layer: 20gsm filter paper, BFE>95 &99%

3th layer: 22gsm PP non

(fabric thickness can be customized)

Size:

Adult: 17.5*9.5cm

Style:

with ear loop or ties on

BFE:

Bacterial filtration efficiency 99% or 95%

Color:

Blue,Green,White, Yellow, Pink, etc

Layer:

1,2,3 ply