-Same comfort and retention of the S plug ear tip.
-Acoustic filter reduces noise
but allows speech/music/surrounding sounds to be heard.
-No helmet pressure issues as it sits flush with the entrance to the ear.
-Opening in the plug lets air pass and reduces the "stuffy" feeling
compared to foam plugs.
-Reduces pressure change ear discomfort associated with
airplane takeoffs and landings.
More comfortable than EarPlanes brand as it doesn't protrude from the ear,
allowing you to lay your head on a pillow