L
I don't think there is a solution for some of us, I don't sweat as much as I used to, getting older, 70, don't sweat as much. However I have on several occasions weighed myself before and after doing my 30 minute cardio at the gym. I lose 1/2 lb of moisture into the air according to the scales, the rest of my sweat is still in my sweats so it doesn't show up on the scales. I don't see how it's possible to deal with this in a helmet. The money back offers don't work for me because to change all my gear, then find out it doesn't work and only get back on the goggles is too expensive.