P100 HESPA nuisance odor filter that has a filter efficiency of 99.995% in a small, lightweight and flexible filter. Designed to remove low level odors and gases that could be unpleasant as well as harmful to health. Elipse P100 replacement filters are smaller, thinner, more flexible and have innovative encapsulation design. Replacement filter to the GVS Elipse half mask safety respirator. Sold as a set (2 filters) and fits both S/M or M/L size masks.