I have one and like it a lot , mine is the Cough Silencer brand . I've had friends listen from less than 3 feet away and they could barely hear me . There is a newer one out that uses a sponge insert instead of cotton balls , but I prefer mine for sanitary reasons . All I have to do is change out the cotton balls and rinse the chamber , the other one needs to have the sponge sanitized after every use . Some folks will say that they can cough into their sleeve just as quietly , but I've tested that with observers and it just isn't true . The Cough Silencer also has a "hands free" kit so that you can secure the chamber so that it won't make noise by bumping other things around your neck such as game calls .