The Pure-air top can be worn under a shirt as a vest, or alone as an outer garment.
The neck of the garment is easily pulled up over the mouth and nose to provide protection against socially transmitted airborne particles, or dropped back down to the chest when not required, without becoming a hinderance. Using the neck of the garment to hold the filter results in a more comfortable fit than from a separate mask with tie-on straps. This also stops potential leakage that occurs from the sides and bottom of a normal mask.
The removable MF15 filter is a product used in high velocity air conditioning units in operating theatres, which meets the WHO requirement to stop public transmission of particles greater than 5um and complies with ISO14664. This stops droplets containing Covid19 or any other virus from becoming airborne, thereby reducing infection and surface contamination, as well as providing 95% efficacy against the ingestion of such droplets.
The filters can be reused 10 times, giving the Pure-air product with its included pack of 10 filters an initial life of 100 days, which can be extended with the purchase of more filters.