The ATV Tek Pro Series Rider Bandana Dust Mask air-cleaning filter helps you breath easy when running dry, dusty trails on your ATV. This breathable, moisture-wicking air filter blocks up to 99.9% of dust particulates for more enjoyable riding. Made to look like a simple bandana, this 4-way-stretch mask is specially designed to be worn with all open- and closed-face helmets and goggles for all-day comfort. Two 1-way Tek exhaust valves in the mask regulate heat, CO2, and water vapor. Washable and reusable. Bandana-style air filter that fits under your helmet Breathable and moisture-wicking Blocks up to 99.9% of dust particulates Filter features 2 Tek 1-way exhaust valves: regulate heat, CO2, and water vapor Washable and reusable