These mic bags are damn cheap. You're not fat at all. They feel like they're worth a dime. But they work fine. I use a Shure SM57 slim mic, so I have two mic covers on my SM57 (one on top of the other). It's not perfect, but it improves the sound quality significantly. When I'm recording the audio for a song, I use a cheap pop filter in addition to these mic sleeves. When I'm just talking to people on Discord, using it on my mic results in a significant improvement in mic quality. I did some tests taking the covers off and putting them back on a few times and everyone I asked said my voice sounded a lot less harsh with the covers on.
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