Review on 🏃 Boao Helmet Liner Skull Caps: Stay Dry during Running and Cycling with Sweat-Wicking Caps for Men and Women - Set of 6 by Rob Allen

I bought these to wear under a bike helmet in the summer to avoid the horrible sunburn of my head from the helmet. They are cool. They are so thin that they have little or no impact on the overall heat you feel inside the helmet. My only complaint is that the stitching is too visible. It doesn't affect the look when worn under a helmet, but (1) they're a little tricky to put on properly so the seams don't match the helmet; and (2) when I wear them on my running days, they look pretty weird because of the visible stitching. Nevertheless, I would buy them again!