The mask has flat elastic ear straps that are gentle on the ears. Mask size (mm): 175 x 95
Quantity: 1 box (50 sheets)
Material: Mask part: PP (polypropylene), Nose fitter: PE (polyethylene), Elastic cord: Nylon, PU (polyurethane)
Filtration efficiency: Bacterial filtration efficiency (BFE) / 99%, Particulate filtration efficiency (PFE) / 99%, Viral filtration efficiency (VFE) / 99%
* Filtration efficiency is a filter permeability test measurement (Kaken Test Center, a non-profit organization).
