100 x PM 2.5 FILTER Washable Reusable Cotton Face Mask Activated Carbon PM2.5
The Generise PM2.5 Mask Filter Simply Slots into the Pocket on Your Reusable Mask or Face Covering. Generise Face Mask Filter PM2.5 x 100. Cotton Face Mask Reusable Washable Breathable Adult Mouth Guard Protection Cover.