In hot weather (over 80F), my head sweats profusely, overwhelming all caps and other sweatbands. Not this. Itï¿½s lightweight, soft and super-absorbent. I bought a second one for training mid-week then bought the beanie version for days in the mid-90s.
Nice and wide with plenty of coverage to prevent the helmet from contacting your neck and forehead directly. Very comfortable fabric that doesn't squeeze too tight, I got the larger size and this I the only one I want to use under my helmet for warmer rides now.