White Duck Down Duvet 10.5 Tog Duck Down provides an undercoat on the bird of soft spherical clusters. It does not have a quill and the strands which radiate from the centre are very fine and fluffy. Shaped like a dandelion head, it has the ability to spring back into shape if flattened - this makes down products lofty with the ability to trap air all around the clusters. A duvet which is 85% down and just 15% small feather will feel much lighter than one made with mostly small feathers. This option offers a really soft light duvet offering optimum warmth. All of Norther Feather duvets are box stitched to ensure an even distribution of the filling throughout the duvet and prevent it all falling to one end. They use only 100% cotton outer casings which are 233 thread count and do not allow the feather or down to permeate through.  Product Dimensions: 230 x 220cm  Material: 100% Cotton outer.