NOSK only filters hazardous minute substances without causing any breathing barriers.
   
    Clip: POE, Filters: S/M/S
    High efficient non-toxic 3-layered material makes up the filters, and the transparent clip part is made of licensed non-toxic POE.
     
    S/M/S is...
    The acronym of SMS stands for three layers of materials: Spunbond-Meltblown-Spunbond.
In SMS construction, cloth-like, abrasion resistant spunbond polypropylene forms the outer layers.
The inner layer is formed from a web of microfibers that filter out many water-based liquids.
The outer spunbond layers are made up of randomly deposited 15-20 micron diameter continuous
polypropylene fibers that serve to provide fabric strength, durability, abrasion resistance, and protection for the meltblown layer.
The inner meltblown layer provides a barrier and is typically comprised of 1-3 micron.
     
  NOSK is an innovative filter that is one size for everyone and is engineeered not to fall off when inserted into the nasal cavities.
 
  Block pollen, dust, allergens, and airborne particles.
  Virtually invisible Wen properly inserted into nostrils.
  Ease of breathing and comfortable fit guaranteed.
  Patented 3-layers filter guarantees refreshed air passing through the nasal cavities.
  Hygienic and mini casing for nasal filters included.
  Multi-invention awards winning nasal filter.