I use them every day at the gym. I've tried other training sets but all those weird fittings designed to hold them in your ears don't work for people with small ears. With the smallest headphones, they are perfect for small ears. I also like that you can use whatever headphones you want to plug into the adapter. I usually just use the ones that come with them and think they have great sound quality for my purposes, which are basically for blocking other people's conversations and just listening to music.
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