The ZANheadgear® Gaiter Mask features an interior pocket for a PM 2.5 filter and built-in aluminum nose bridge with pre-cut ear loops. Made from breathable, moisture-wicking polyester for comfort in all climates. The aluminum nose bridge provides a secure fit, creating a tighter seal and reduced fogging when worn with eyewear.4-way stretch fabricMoisture-wicking, lightweight and breathableReusableIncludes one PM 2.5 filterAdditional PM 2.5 filters available separately, P/N 526525Dimensions: 10" W x 12" L