Medical disposable face masks offer more protection versus economy masks. While priced higher, medical masks go through additional screening and testing in order to be designated a medical mask. The Canadian standards for a mask to be deemed fit for medical use (not surgical) is ISO13485. The American equivalent is FDA and European equivalent is CE. This mask has all 3. Each order containers 50 pieces and has free shipping throughout Canada. While it has the same 3 layers as an economy mask the materials are of higher grade and require to pass more tests. These are in stock and can be dispatched within 24 hours after payment is cleared. Our mask fit courses are available 7 days a week through our 10 western Canada offices to ensure proper usage. We use Canada Post which include tracking number. The nose bar is adaptable to ensure a comfortable fit.