OK.....I read this whole post and have a question.
Currently I wear a Shoei Hornet size Large that fits snug but comfortable as a proper helmet should, however a bit tight to remove.
I just ordered & it has shipped (before finding this informative post!) an FX-39DS Medium as my head measures 59 3/4 and is round.
So.....should I give it a try....or.....refuse delivery (FedEx) and pay for restocking ....and order the Fly in a Large?
I know....it's kind of a subjective thing....Thanks