Size Extra Small is suitable for children ages 4 to 11.
Caution: Do not use this product for more than 8 hours of accumulated usage. Hypoallergenic, Non Sterile, Latex Free, Graphene Free CanadaMasq Q100 CSA Certified Flat-Fold Non-Powdered Air-Purifying Respirator Mask in White.1:21Ӕ is the new Canadian standard for respirators used in healthcare. Please store unused product in the original packaging between -20'C to 30'C and less than 80% relative humidity.