Cyrus,
You might want to check out the Daytona brand helmets. I have one of their DOT half helmets. I'm not much of a helmet guy and really had a hard time finding one I could wear for any length of time due to neck problems. The Daytona helmet definitely the lightest and smallest of any others I could find. Head Trip, Daytona and Nexl all make their shells in different sizes as opposed to other manufacturers that make one size shell and add thicker foam to it to make it fit a smaller size.
