Great value for the money
This product made in Canada is made of great quality. They appear a little thin but once inserted they do their job. I only wish I had a bigger filter pocket. I double mask with a surgical mask on the bottom and I don't feel like my breathing is restricted. There 3 layers of polypropylene. My only suggestion would be to label the front and rear of the filters. The dotted part  faces out the softer part faces the inside. If your on the fence on buying these buy them!
Rating: 5 stars