If you live somewhere where your ride starts cool warms up gets cool again, than this is it.
What i like most about this skully is that you can stuff it in your jersey easily, doesnt take up much room, and is pretty warm. not sure its what i would go for in the 30's, but 40-60's its great.
more coverage than pearl izumi skull cap...AND no seem at the edge makes is way more comfortable under a helmet than PI.
only downer is price.