Greetings from Parrish Florida.
When I bought my 1st bike, the one thing I thought I'd hate is the wearing of a head cover. I have never been able to even wear any hat do to headaches they seemed to cause. I tried on a multitude, and many different places. ended up with a HJC model. All the sales dudes said pretty much the same thing. It should feel good. I love mine. Can't really feel it. The sizes do differ with different manufacturers. If the one you got online feels good, doesn't squish the skull too much, or wobble, you did great. Plus you look "Maaavelous Dahling!"

 

well, thank you! I think I got a good deal on the helmet, according to all the advice that I have received on here, I definately got my moneys worth and then some.