Ultrasonic welding; Earloop 3 PLY: Non-woven fabric with Meltblown filter Size: Pack 17.5cm x 9.5cm; Mask One-size fits all Color: White, available in Blue/ Green Nose strip: Metal flexible to secure position PACKING INFO: 1 pack 50 pcs face masks Pack Size: 19cm x 10cm x 7.5cm 2000 pcs/ 40 packs /1 carton 2.200.000pcs/ 55000 packs/ 1100 carton/ 1 container