This does not feel like cashmere to me, but has a good fit and seems to be good quality manufacturing.  I feel like this was a little expensive for the texture of the material.  It is a little itchy on my skin.  I debated sending it back, but have decided that as it fits good I will give it a try.  The label says hand washable and I have heard that good cashmere gets softer with time.  Only time will tell.
As to size it seemed true to fit.  I ordered my normal size and this fit like a glove.  Order shipped slow, took 5 days to get my 2 day shipping delivered.  However, I ordered at the busy after-Christmas season so that was probably a factor.