Sounds like you are in a vacuum
I've tried to use the high fidelity earplugs to drown out white noise at my job but they didn't work. The noise was lessened but so were voices of colleagues and my own voice sounded like I was in a vacuum. I haven't been able to try the pressure plugs swimming or on a flight. The foam plugs are just your standard ear plug for sleeping or for when you want quiet. Only the two pairs of plastic plugs fit in the keychain holder and they fit so snugly that they may get deformed or warped if they are stored in there. I really wanted to keep one plastic pair and one foam pair in the holder but there is no way they would fit.<br /><br />I brought up my concerns with the seller and was offered a full refund (minus taxes) which was quite unexpected. I would definitely buy from Ava-Sense again but can't really recommend these earplugs.
Rating: 3 stars