Its pretty noticeable, If I shave, I get a tight suction feel on an indrawn breath. This is same experience you get with a scuba mask. That's interesting there

Its pretty noticeable, If I shave, I get a tight suction feel on an indrawn breath. This is same experience you get with a scuba mask. That's interesting there is some protection, I could believe still better than things like cloth and surgical because the strapping tends to be tighter.