Look for four flanges
I need noise cancellation for work. I got these so I wouldn't have to use the foam ones and create so much waste, but unfortunately the three flanges are noticeably less effective than the foams. They're more comfortable because they don't press on my cartilage, although they do create suction which might bother some folks. I also found that in a tube shaped carry case, they get stuck on each other - it's hard to get them to come out! Finally, they need to be washed regularly; not a big deal. I found some with four flanges though which I prefer.
Rating: 3 stars