That should do it: After I had the first one I bought 3 more I sweat a full 6 hours every morning; shaved head, lots of dirt in the air. Conforms VERY to the shape so you don't look like you've added 3" diameter to your head. The fabric is quality, not cheap crap. No overheat protection but more than enough for an extreme fit. My hat/helmet size is 7.25 to 7.5 (seven and a quarter to seven and a half). big dome and they fit really well.
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