Workout Exercise Mask + 3 filters.
Adjustable Air Flow Mask: Designed for exercise and heavy breathing activity!
Remember, no mask is 100% effective at protecting from viral transmission.
The most effective thing you can do to stay healthy is wash your hands and practice appropriate social distancing.
The PM2.5 filters are shown to be effective in blocking the vast majority of airborne particulates, even the very smallest nanoparticles. The PM2.5 name comes from these filters' original use as protection against Particulate Matter 2.5, the smallest and most dangerous form of air pollution.
Airborne virions like the Coronavirus are even smaller than PM2.5 (the Coronavirus's lipid envelope is about 120 nanometers across). However, research has shown the material to capture nanoparticles of a similar size with a high degree of efficiency (approx. 95%), and lab tests show a PM2.5 filter with a properly-fitted cloth mask can reduce airborne particulates by as much as 90%.
The PM2.5 filters are made from the same advanced materials used for respirators like the N95 and KN95. Spunbond is a non-woven fabric that filters out larger particles, while providing structure and holding the finer non-woven layers in place. Two layers per fi. A mask + PM2.5 filter provide protection without the unnecessary strain on your heart. When combined with the adjustable cotton masks, PM2.5 filters offer a high degree of protection, with significantly less inhalation resistance than a sealed n95/kn95 respirator. In laboratory testing, cotton masks + PM2.5 filters restricted inhalation by no more than 71 Pa, or less than 25% the max inhalation resistance of a NIOSH-certified N95 respirator (343 Pa)
PM2.5 filters offer protection that's practical. Disposable PM2.5 filters are flat, so they take up less space than standard respirators. They never lose effectiveness, and you can use them continuously for 16-24 hours, around 1 - 2 weeks of occasional use (or whenever it becomes harder to draw a breath).