This is a beautiful Giorgio Armani Black Label sort of combination blouse/jacket. It isn't lined and does up with 2 snap buttons at the front. It is an Italian size 36 but I am an 8 and this fits fine. It is made of some upmarket Giorgio Armani type acetate material but I have a habit of taking labels out because they show through so can't be accurate. It may well be gently washable but I dry clean it.
There is a half belt in a sort of fine suede material and there is also a band of that around the arms too.
The colour is absolute impossible to describe - it's dark but not quite dark blue or even dark grey - a sort of combination colour. All very Armani and very beautiful.