I always wear a cap under my helmet. I use a medium size helmet and found this cap tight. Normally the caps loosen up after being wore a few times. I have worn this cap 3 times and it leaves a deep indentation in my forehead. Hat looks great, just too small.
Might be good for you... maybe it matches your jersey
I didn't love the lose fit (with weird angles), seems more geared towards look than practicality. Returned for a more technical cap.