They are not joking about it taking a few day for it to fluff up.  It's flat when you get it, after about a week it did double maybe triple in thickness.  I put it in a duvet and it's filling it up nicely.  When I 1st put it in I wasn't sure about it, but as I said it has fluffed up a lot.  It's not very heavy at all that was what I wanted.  The one pictured has been out of the package for awhile.  It will not look like that when you get it, give it time and it should.

Pros: For the price it's a good buy if your wanting light to medium weight.