The pillows in the size 40x80 cm comes in a separate protective cover (with zip), where you can keep this dust protected when not in use. The pillow is soft yet still stable, so it is regarded as gentle on the back and through the Campaign for Healthier Backs (AGR) eV is certified. Due to the choice of materials, it is not only suitable Machine washable (up to 60 ° C) but also drier, making it easy to care to name. The cushion can be opened by a zipper, it is another envelope which is also closed with zipper and wherein a filling material is made of fiber balls. If that pillow like me is too thick, can easily remove fill and adapt to his pillows individually. I would, however, have wished for a bag in which these could be kept, because loose in the sleeve I do not sparkling. The cushion has been tested by my husband and me. In the original version, it's me, too thick; I'm more of a flat sleeper. An adaptation I have not done, because my husband is so wonderful and sleeps. It will be his pillow, he could see a significant improvement in terms of his ailing back within a few days.