Reusable Polypropylene Filter

3-layer masks with a polypropylene filters are now recommended by Canada's Chief Public Health Officer Dr. Theresa Tam.

• The Public Health Agency of Canada is now recommending Canadians choose three-layer non-medical masks with a filter layer to prevent the spread of COVID-19 as they prepare to spend more time indoors over the winter.
• "To improve the level of protection that can be provided by non-medical masks or face coverings, we are recommending that you consider a three-layer nonmedical mask," she said.
• According to recently updated guidelines, two layers of the mask should be made of a tightly woven fabric, such as cotton or linen, and the middle layer should be a filter-type fabric, such as non-woven polypropylene fabric.

Our polypropylene filters are:

• Reusable
• Designed to fit our masks and provide maximum coverage
• Come in 4 sizes (Adult Large, Adult Medium/Small, Child Large, Child Medium/Small)
• Have markings as visual aids to help ensure that the filter is inserted for best effectiveness

How they help and how to use them:

• Polypropylene has an electrostatic property which helps to repel viruses.
• When polypropylene is washed, it loses this electrostatic property.
• After washing, the electrostatic property can be reactivated by ironing on a low-heat setting or rubbing against something like a rubber glove.
• The reactivated filter can then be reinserted into the mask.

Note that the second picture is for reference only to show the size of the filter relative to the mask.