Size Medium is suitable for Youth and Adults with small faces.
Hypoallergenic, Non Sterile, Latex Free, Graphene Free CanadaMasq CSA Certified Flat-Fold Non-Powdered Air-Purifying Respirators in White. CSA Certified-CSA Z94.Caution: Do not use this product for more than 8 hours of accumulated usage.1:21Ӕ is the new Canadian standard for respirators used in healthcare.