We have developed a very simple way for the selection of the FiiT® mask size
You can find all the information on the dedicated page for the size guide.
We filter particles up to 20 nanometers in size, so we will filter out most existing viruses.
In the current case of Covid-19, the R-PUR mask will be able to protect you effectively but also to protect your close ones, thanks to our stop-valve system.
In addition to the protection capacity, we must also take into account the hermeticity component.
Indeed, according to the different face morphologies, your mask will be able to filter out 99.98% of the ambient air, which will make it your most effective ally against the spread.
You can learn more on our page Our Technologies
Our algorithm Zephyr aggregates the average number of kilometers travelled with air pollution data. It calculates a precise date (the time) when your filter will need to be replaced in order to guarantee optimal protection.
On average, the filter is replaced after 5 to 15 weeks of daily use, depending on your personal use and the level of exposure to air pollution.
We try to put a limit for the benefice of everyone