Hollow Fibrer Cushion Pad Care: To plump a holllow fibre cushion, hit the cushion in the centre. This will not only introduce air, but also send the fibres back out to the corners. Hollow-Fibre filled products are covered in a white polypropylene corvine cover as standard which conforms to BS 5852/2. Hollow-fibre: This light and wonderful synthetic filling is created to bring luxury to those who prefer a man-made filling for its hypoallergenic properties in particular. Hollow-fibre also has tremendous lofting properties and, like our other products, provides the ultimate in warmth and comfort as standard. Dry Cleaning - Professional dry cleaning only. Washing - Hand wash or use a Laundrette size ( large capacity) machine at 40C using a wool cycle, promptly spin dry and then hot air tumble dry. Always ensure that the filling is thoroughly dried. Do not iron.