VMCV: Highly efficient particle media protects from over 95% of airborne .3micron particles. Carbon filter helps protect from odors. Exhale valve helps reduce heat and moisture inside mask. Easy breathing on inhalation and exhalation. Bendable nose band seals gaps. Stretchable trim and ear loops provide comfortable fit. Recommended for PM .3, PM 2.5, dust, allergens, post-combustion particles, germs, shaving, biologics, mold, particles near wildfire smoke, and other airborne contaminants.

SIZE GUIDE: Size Small : Youth under 10 years old | Size Medium : 10 years to petite adult | Size Medium+ : Small and short adult | Size Large : Majority of all adults over 5'7" (1.70m) | Size XL : Very large adult or over 6'2" (1.9m) Vogmask is Quantitatively Fit Tested on human subjects to confirm the filtering efficiency is retained over a series of motions like walking, head movements, bending over, talking, etc. Filtering efficiency depends on a good fit.

MONEY-BACK GUARANTEE: Vogmask offers a 30-day money-back guarantee. (Buyer may need to contact seller directly for return instructions if Amazon denies automatic-return processing.)

FUNCTIONAL: Two filter media sewn into the middle layers of each Vogmask: a carbon filter and a highly efficient particle filter. Easy breathing tests in lowest 1/3 of safety range. One-way exhale valve tested to not allow inhale of microscopic particles through valve. Follow Fitting Instructions carefully. Leakage will occur if facial hair passes under face seal. This product does not guarantee protection from illness or any harmful substance.

ECO-FRIENDLY: Reusable for about 3-12 months depending on air quality conditions. Recommended use by date 3 years from manufacture marked on box Use alcohol wipes to freshen surfaces. Washing does not clear the filter media of particles. Wash by hand, hang dry. When there is a noticeable increase in breathing resistance indicating the particle filter media is saturated with microscopic particles, the entire mask needs to be replaced.