Why in the world does that thing have a such a long tail? I don't need something sticking down into my jacket, or even worse flapping in the breeze. Other than that it looks good. The OTH one lust doesn't look comfortable with those ridges. My helmet is tight and the do-rag I am currently using, as skinny as it is, still makes the helmet fit tight. Besides which, it is cotton. With my experience in the heat down here I don't think I want cotton on my dome. I like to use moisture wicking shirts under my jacket as they feel much more comfortable
You may want to check it out a little better, it's not cotton. It's the same dual layer that is used on the under garments. If your helmet is extra snug, there may be an issue, maybe not. If sized correctly, the liner will just make it a bit more snug. I where it virtually all the time, the helmet liner has adapted to it. The tail goes in the jacket, helps wick moisture away from a sweating neck. I've tried other alleged wicking liners, the LDComfort works best, for me. Just to emphasize, it is not cotton. Your right about cotton sucking. Agree on wicking shirts and socks also. It all helps.
YMMV.