... ,dust and bacteria4.Used for clinical,housework,gardening,maintenance of the machine.etc5.Laboratories and factories for blocking liquid mists,harmful ... free,fiberglass free,fire retardant,no dyes and gentle on the skin.Specification: MaterialPP nonwovenMelt Blown Filter+PP nonwovenWeight18/20/25 ... ,pink,yellow,green,blue availeStyleEarloop or On Tie 3ply Nonwoven Earloop Surgical Mask