RZ Dust/Pollution Laboratory Tested F1 Active Carbon Filters Size Regular/Large 3 - Pack ?
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<b>[Product Information]</b><br>
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<li>Neoprene Construction . Tough-duty durability</li>
<li>99.9% Replaceable Active Carbon Filters</li>
<li>Dual one-way discharge valves . Reduce condensation</li>
<li>Adjustable nose clip .Prevent fogging</li>
<li>Adjustable Velcro Strap . Universal fit</li>
<li>Filters tested at Nelson Laboratories, USA</li>
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