Ah, dude.
I wear ChillIt headcovers, ninja masks 3x over, a Coolit towel dampened with cold water on my neck, all this even before I put on Vive. And two fans blowing on me and the AC on. I hate summer.
Because i'm getting annoyed at swapping/cleaning the two foams back and forth so often due to sweating like a pig/hooker in a church.
https://www.amazon.com/gp/product/B00419MWD4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B001B5I57I/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01DHKBVQQ/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
i saw people suggesting the following product https://www.amazon.com/gp/product/B00419MWD4