Each face mask filter is 2.4mm thick needle punched polyester, non-woven and this provides the primary filtration of the face mask. The random orientation of the non-woven fibres in the filter creates a fibrous web to trap particles and give the best filtration without making it hard to breathe. This non-woven filter is traditionally used as one of the filtration layers in N95 masks.

• Pack of 10 reusable face mask filters for use with Delphis Eco Face Masks.
• Reusable face mask filters made for optimal filtration with ultimate breathability.
• Each face mask filter is 2.4mm thick offering great filtration.