The pushbuttons with which the ceiling is held together, are attached more than poor. One no longer worked directly unpacked already and fell off. There's the blanket but tied together anyway too hot, I always use only one (the transition ceiling with 1000 g filling). Therefore, it does not matter whether the pushbuttons meet only once their function for my application. A conversion makes little sense, since the still tight pushbuttons are correspondingly poor secured. Therefore it can be assumed that will always be a push button while in case of conversion of the bad secured accordingly. Otherwise, the ceiling fulfills its function so far. It is for me neither too heavy nor too light, and keeps me warm, sometimes too warm. After only 4 weeks of testing can be over the long term qualities, of course, not make a statement. Although the ceiling is made of synthetic fibers, they smelled only slightly when unpacking for plastic and the smell was not noticeable after just a few nights.
