Our inserts consist of white duck feathers and down firm filled, in a hypoallergenic casing. First quality raw materials are selected from sources around the world to meet the highest standard requirements for a combination of softness, comfort, support and resilience. Our insert casing is made from 100% super-soft down-proof cotton. Both the cover and duck down/feather filling are hypoallergenic and sterilized. With extremely high fill power from duck down and feathers, the cushion keeps its shape better. Double stitching prevents seams from bursting.