Rider Dust Mask - Black Clean flow filtration system, Protects your mouth and nose from harmful dust on the trail, Sewn in interior filter blocks 99.5% of all dust particulates and ensures dust- air inhalation and a more enjoyable riding experience, Mask also has (2) one-way exhaust valves which reduces lens fogging, releases heat, CO?, and water vapor; washable and reusable, Mask is universal and comfortable for most men, women, and children and accommodates neck sizes up to 18", Mask is helmet and goggles compatible