I've used this cap for several morning rides with temps below 40 degrees. Works great at keeping my head warm, plus it doesn't let too much heat accumulate and wicks away sweat and moisture. Fits perfect under my bike helmet. Good purchase.
Only one problem
Twhitney on 9/5/16
The fit and the price were excellent..only a one problem..the stitching on the inside of the cap where the band connects to the crown of the cap stretches across the top part of my ear causing great pain after wearing it for awhile