I typically wash all new bedding to rid of the "warehouse" smell. Now while i did immediately wash this - it didnt stink. It came in a clean tight zipped bag inside of a box. 
After washing (and drying in dryer) the insides were not all clumped or lopsided which sometime happens after washing down alternative comforters. 
You can tell the exterior is stain proof by touch in it seems to almost have a coating on it. this is a plus for anyone with a dog who lets them in the bed. 
I live in south Florida and for me it is hard to find bedding that isn't too heavy but is still soft. This down comforter is soft & lightweight  while still providing warmth and comfort.