I have purchased a few of these and although it is a nice material and nice fit they all have the same flaw. The collar that rolls, it should have been designed with a flat seem to prevent this instead of the inferior designed seem it has.
At first I thought I might be able to live with it but after wearing a few times the collar becomes uncomfortable and extremely annoying to the point of not wanting to wear anymore, shame.
Perhaps a new version will be made with this improvement to make it comfortable.