The O2 Curve may look like a protective mask, but it is predominantly a respirator above all else. The brand makes it clear that a mask is not a respirator. The O2 is made from medical-grade silicone material in order to hold an airtight seal around the nose and mouth of the wearer.
This way, no air is able to pass through the patented filter with no shared air with others. It offers a high quality protection in a comfortable way so that it can be worn over a long period of time. The implemented filter effectively removed harmful particles in the air and the ionic component charges the filter to trap particles that are far too small to be filtered mechanically.
Image Credit: O2