CE FFP3 CERTIFIED: FFP3 masks remove at least 99% of non-oil-based particles down to 0.3 microns - including dust from sanding, sweeping, cutting, gardening, woodworking, grinding, sawing, and mowing. COMFORTABLE & ADJUSTABLE: High quality, light weight construction provides comfort, while the adjustable nose clip with foam and heavy duty straps conforms to your facial features for an enhanced seal. *BREATHE EASY: Built-in exhalation cool valve reduces heat, moisture, and humidity build-up, to keep you more comfortable longer. *DISPOSABLE: Compactly designed to go anywhere, these single-use, all-in-one FFP3 face masks are an economical choice for respiratory protection. *COMMON USES: Protects against, particles such as those from processing minerals, coal, iron ore, flour and particles from most common chores like sanding, sweeping, cutting, gardening, woodworking, grinding, sawing, and mowing.