Special note: We, Toytexx is MDEL (Medical Device Establishment Licence (MDEL)holder MDEL # 12499, issued by Health Canada.One size fits most people. One pack contains 50 pcsMade of non-woven fiber fabric, 3-layer, soft and breathable.With elastic ear-loop, soft and comfortable to wear.Blocking dust, air pollution and dropletSpecification: Color:BluePackaging:50 Masks/BoxExpire Date:03 2023ASTM Standard:Level 2BFE:> 98%PFE at 0.1 um:> 98%Earloop Style:Flat knitted earloopFluid Resistance:120 mm HgFlame Spread:Class 1MaterialsMask Body:Spunbond Polypropylene (SBPP)Nose-piecePlastic and WireEarloop:3mm latex-free round elastic