This robe drapes beautifully.  I'm 5'4" tall, muscular build (a runner)
and about 125 pounds.  The small/medium was perfect.  Anyone small than
myself will find it on the large side.  Anyone larger than myself should
get the medium/large.  I did buy both.  The medium large HUNG on my like
a shapeless curtain.  Forget that!  The small/medium fits me perfectly.
I have long arms and the sm/med fits them perfectly where the med/large
covered my hands!  The black is okay, but I wish this was made in other
colors. It's NOT for winter - it's a t-shirt weight but with a butter soft
feel.  I don't know how it will wash yet, so I'm keeping the med/large just
in case this one comes out Barbie-doll size... after wash/drying.  I'm
too impatient to hang anything to dry!  Finally I don't have a frumpy
bathrobe!  WHERE ARE MORE COLORS???!!!!  Feels great.  I hope I've given
enough size information here...to be helpful.  Anyone under 100 pounds
isn't going to find the sm/med small enough.  Anhyone over 130/140 pounds
better move to the med/large.  Hope this helps.  It's a definite BUY ---
because it doesn't make you look like your grandmother!  Ha ha. - Love you
Grandma - just kidding of course!