SLADEwrote a review of Castelli Thermo Skully on February 29, 2016
Familiarity: I've put it through the wringer
Fit: True to size
I thought this was going to be too small and wouldn't cover my ears, but once I put it on, pulled it down over my ears and got my helmet dialed in, the fit is perfect. It stays in place during the ride, it's super warm, and it's not bulky so I barely notice I'm wearing it. And, as another reviewer mentioned, it's the perfect piece to wear under a ski helmet.