I''ve been fully SLY now for six days! I should of done it in the spring!! Brrrrr! There's goose bumps on my noggin!
Hat.
Or fleece beanie--one issue is slipping up on a freshly mowed dome.
I just picked up one of
these. Perfect for keeping the breeze off the dome.
Watch cap. Many advantages: cheap, adjustable coverage, and--for Slys, no problem with hat hair.
Get yourself a few good knit caps. Walmart has a good selection at great prices.
My mom knitted me a nice warm beanie. Its a little itchy but please don't tell her that. It does the job, though and looks good even if I say so myself.
Hat.
Or fleece beanie--one issue is slipping up on a freshly mowed dome. 
You do get somewhat used to it. This is my third winter and
The first that I could stand temps below 50 without a beanie.