Set of 50 professional dust and particulate masks. These masks are great for protecting you from dust, pollen, pet dander and other non-toxic airbourne particles. They are latex free and have adjustable straps for one-size fits all. Easy breathability and comfort for talking. Great for sanding, grinding and contruction areas with low ventilation. Also great for remediation and restoration work. • Set of 50 Dust Masks • Filter Dust, Dander, Pollen and More! One Size Fits All and Latex Free!