I usually just use my 1/4 helmet when riding in the heat (or most of the time if its not raining)

I wear a Klim jacket and Dianese pants, and gloves to be safe and then I put on a 1/4 helmet. Not very smart!!!!
I need to find at least a 1/2 helemet I can wear comfortably in the heat and be safer.

I need advice please.

Stevenolts