Really kills the sound and you can wash them.
Wow I really like these.  I used both the Red and Blue while my husband was watching tv and I was trying to read.  Sound was completely gone.  The grey pair is great too, it has a muffled sound so you can still hear if someone is calling your name and trying to get your attention.  Plus you can wash these with soap and water and use them over and over again.
Rating: 5 stars