Re-Mask Pro Features:

• Capability: Excellent protection for PM 2.5 particles in air pollution and other microscopic airborne contaminants.  Exhalation valve keep moisture & CO2 away from interior of mask. Selective elastic fabrics provide excellent elasticity on earloops and keep the product looks great. 
• Reuseable: 2 layers of inner filter media, sewn into the mask itself. a Carbon filter and a supreme effective particle filter that protect you from allegry, pollution, mold, contaminants and more. 
• Eco Friendly: Re-Mask  are reusable for 3 months to over a year depending on air quality conditions.