I was talking about Shetlands this morning & mentioned the three fits:

1) For layering under a jacket. A trimmer fit.
2) As a stand alone item. A regular fit.
3) 'Sloppy Joe'. A bigger baggier 'weekend' kind of look.

Ring any bells?

... Equally I have Tweeds Sacks in two fits - Layering & non-layering.

How 'bout yous?

J.