In preparation for next summer and sewed myself a bicycle cap to wear under my helmet. Because a bicycle helmet has holes and the scalp is the skin you can hardly put sunscreen on, and to hide my helmet hair, when taking it off.
I used some leftover fabric from one of my bicycle T-Shirts, so it should fit nicely. The pattern I copied of a cheap cap I took apart and changed up a little.
keep sewing, bicycling and smiling