Shure - SM35-TQG

I'd give the Shure SM31FH a look. You'll need a belt-pack, but it's built for 'fitness instructors' so has stuff like sweat-resistant design. I have an SM35 on the shelf, but only because the headband for it is a bit small for my big (62cm hatband) head, and gets painful to wear after an hour or so. Sound it provided was excellent.

Do be aware that the SM35 is non-adjustable, and if you have a larger head (I wear a 62cm hat) it gets outright painful to wear after about an hour or three. The sound from it is great though.

You might look into a headset mic like Shure SM35 or PGA31, or Countryman knockoffs designed for theater performance (authentic Countryman is very expensive). Be aware to check if it needs to be amplified/any supporting equipment that might be needed to get it into the PC. Obviously do research to decide if they sound good to you. They are typically going to sound much better than Call of Duty lobby 'gamer headsets'.

[Shure SM35](https://www.shure.com/en-US/products/microphones/sm35?variant=SM35-TQG) Get it packaged with the XLR adapter. Don't go USB. You'll regret it later. Buying USB is like buying a chromebook. XLR is like buying an actual computer. If you get USB you're going to be locked into it, you're going to be stuck with whatever encoder hardware they jammed into the mic and when one of them starts to fail, and they will, you'll be out the entire thing. Get the XLR setup, you've got an open format. You're free to plug it into whatever devices you wish. Or, if want want you can be very minimalist. But with XLR you can adjust to whatever you need. You can also do longer cable runs than USB And you're less likely to get grounding feedback into your audio. I had one of the original Blue Snowballs and trust me, while it worked there are a lot of sacrifices and you run up against it's limits REAL fast.

Btw if you want an idea how good and clean the mic is. People cannot hear me eating while wearing the headset. It does not pick up audio from my home theatre either. 

Disect a Shure SM-35 and mount the internals to the mask. Or just wear in inside the mask as it is super low profile. Bought one for our drummer as he hated doing backup vocals having a giant mic stand he had to deal with. This solved the problem real quick.