I bought a large (my usual size) & the sweater is so big two people could get in it.  The shape of the sweater leaves much to be desired.  The sleeves are snug, and bat-wing style.  The body of the sweater is a huge square.  Sort of hangs like a tent.
The yarn is very nice & soft & it has a nice weight.  I'd say it's a medium thickness.  The pattern & colors are really pretty & the buttons are really nice.  I loved the picture, but it is just too big & shapeless so I am returning it.  I really liked the picture, but it just looks awful on me.  Perhaps if are tall & very thin, and buy a small it might look okay?