Even good ones will look pretty flat when you first get them because they've been compressed. They will need a bit of time and some good shaking to fluff back up, or you can put them in the dryer with a felt ball or a tennis ball to re-loft them too. Even when I am backpacking, first thing I like to do once I have my shelter up is to lay out my down topquilt (similar idea to a sleeping bag) so it has time to fluff up before bed and at home I store them loose.