“So, the masks are a very breathable cotton, the mask is fully washable, it has 2 x PM2.5 filters. These are great for extra protection, however the mask can be used without as they have 3 layers of cotton. We have been looking at UK government and WHO advice on what masks should be, but this does seem to change constantly. I have based these masks on ones that I wore during a motor bike trip we went on during a visit to Vietnam in 2019. I found them comfortable, and the extra under chin panel, adjustable side adjusters and with the added wire over the nose that once pinched gives a tailored fit. The filter will last a long time as long as it doesn’t get wet.