Well, on MY shoulders it fits quite neatly, and I have fairly small shoulders.
It is quite a weighty fabric-not light enough for a really summery day, IMO, but ideal for a not-too-hot day, like we're having at the moment. I've had mine since early April, wore it at lot with legging/boots/jacket, and will wear it like that in the Autumn too.
Quite fancy the green too...