RZ Dust/Pollution Laboratory Tested F1 Active Carbon Filters Size Regular/Large 3 - Pack ?

Active carbon filters: n99 filtration is a cutting edge technology that removes 99.9-percent of dust and particulates from the air. Protection extends to over 130 toxins and chemicals greatly reducing the effects these have on lungs. Replacing filters over time keeps the mask at top level performance. Filters are washable 8 to 10 times. Do not wash filters, if filters have been used with mold present, dispose of filter after use with mold. Neoprene construction: neoprene is a comfortable material perfect for the low profile design. The closed cell waterproofing blocks moisture and retains optimum body temp. Abrasion-resistant fabric combined with the high durability extends the lifetime of the product and protects its user. Rz mask can be washed (take filter and valves out) on regular cycle in washing machine. Dual valve technology: a one-way airflow vent expels condensation keeping the mask interior dry. Each valve facilitates easy breathing outwards by optimizing airflow. An easy twist seal locks the inner filter in place and blocks unfiltered air carbon filters: n99 filtration is a cutting edge technology that removes 99.9% of dust and particulates from the air. Protection extends to over 130 toxins and chemicals greatly reducing the effects these have on lungs. Replacing filters over time keeps the mask at top level performance. Filters are washable 8 to 10 times. Do not wash filters, if filters have been used with mold present, dispose of filter after use with mold.