Fabric masks retain viruses and bacteria by about 50 percent, and also reduce virus excretion during sneezing or with nasal discharge when we don’t yet know we’re infected.
It is recommended to wear the mask for 2-4 hours or until it gets wet. After wearing them, washing them and ironing them with a hot iron will give you a tool that you can use for more than one day.
PS Select the mask size in the product information. The mask with elastics.