"Add an extra layer of comfort to your bed with the Martex Naturals Duck Feather Mattress Topper. Designed to bring everyday luxury to your sleep space, it pairs a high-quality duck feather filling with a 100% cotton cover for a naturally cushioned feel. Responsibly sourced and RDS certified, the 100% duck feather filling is wrapped in a Nomite® certified cover. The tightly woven cotton fabric forms a barrier against house dust mites, helping to protect against the allergies they can cause. Finished with a 233 thread count cover, it’s a considered choice for refreshing your bed with a breathable, natural layer. Key features Thread count: 233 Cover: 100% cotton Filling: 100% duck feather Nomite® certified cover Tightly woven fabric helps create a barrier against house dust mites RDS certified Machine washable Dimensions Single: 91 x 191cm Double: 137 x 191cm King: 153 x 200cm Superking: 183 x 200cm Care Machine washable."