base camp m plus dust face mask 1 pack for woodworking construction mowing sanding gardening cleaning painting sawing and grinding base camp unique selling proposition eapi filter technology: ●eapi filter technology: electrostatic adsorption & physical interception, advanced nanotechnology ●6 layers face mask, consistent high performance ●filter materials of the dust mask: double-layer melt-blown with electrostatic adsorption perfermance, activated carbon, non-woven polypropylene ●activated carbon filters isolate non-toxic dust, fumes, common airborne irritants and other non oil based particles ergonomic design: ✔aeb system helps remain the adjustable face mask securely on your face for comfortable fit, relieve pressure on nose and ears and create a tight but comfortable seal ✔ fully formable nose clip ensures effective seal and prevent fogging ✔ earloop design keep the reusable face masks from slipping ✔ adjustable hook & loop strap for optimal fit ✔ dual one-way airflow vent expels condensation keeping the breathable face mask interior dry user-friendly experience: ✔ m plus dust face mask shell allows the face to breathe and feel cool in hot and humid conditions ✔ have the one-way valves downward-facing to maximally avoid exhalation fogging up your glasses ✔ the m plus mesh face mask shell and valves can be washed for next use when they get dirty, the filter is replaceable note: 1-the adult face mask shell is just a holder of filter, it's the inner filter that performs the filtration of non-toxic dust, fumes, particles, etc. 2-while the design of our washable face masks make every effort to prevent fog your glasses,we cannot promise 100% no fogging. 3-to be safe for you and others, it is recommended that you check and tighten the valve before wearing the mask to avoid the valves falling off accidently. 4-comes with reusable zip lock packaging bag, please carefully seal the packaging bag after putting out or in your dust mask to protect masks and filters.