When looking for a medical procedural mask or surgical mask for healthcare, look for maximum breathability and an ASTM level 3 fluids rating. The Airguardz Level 3 procedural mask is the most breathable Canadian-made mask on the market right now. If you're among the general public looking for better aerosol filtration, choose a respirator such as one of our KN95 or N95 models. Respirators are designed to minimize air leakage around the sides, which is an improvement over surgical procedural masks. If you work in healthcare AND want a better mask, you'll want a respirator with a fluids rating such as the Canada Masq Q100 or the Vitacore CAN99 9500.