Careful, they can be hard to get out.
I have large ear canals so I purchased the larger version and they worked well when they were seated. One big problem, at recent racing event, I had to have first aid remove one the plugs with tweezers because the stem wasn't long enough for my fingers to grab onto. The more I tried to remove it the more it went deeper. I needed ear protection so I used them again only to have it happen again in the other ear.
Rating: 2 stars