durable, form-fitting shell that easily conforms to most face shapes and sizes, adjustable nose clip helps seal along the nose and cheeks, molded nose piece improves compatibility with eye protection products and seal points on the top reduce fogging of eyewear for better vision, provides protection from low-level exposure to non-hazardous dusts and oil or water vapors typically encountered during hand sanding and simple DIY tasks, head straps hold the respirator securely in place and contribute to a good, comfortable seal, with color coding indicating performance classification