The PM2.5 REUSABLE MASK with Filter can reduce airborne particles by as much as 90%. The replacement PM2.5 activated-carbon filter is engineered to minimize the inhalation of small particles. Comfortable to wear, made from breathable fabric which helps to reduce sweating and condensation, they can be worn continuously for up to 16-24 hours and for approx 1-2 weeks of occasional use before the filter needs to be replaced.
Always follow the care instructions on the pack.