Enhance the support and cushioning of your mattress with this 100% duck feather mattress topper. Designed with performance and durability in mind, these toppers are box stitched to ensure even distribution of the feather filling and finished with a piped edge. Filled with 2000gsm duck feathers sealed inside a 100% cotton proof cover. Complete with elasticated straps to ensure the topper stays in place, even when in use. Complement the comfort and support of your mattress with this 7cm deep duck feather mattress topper. Material composition. Filling: 2000gsm duck feather (2-4cm feathers). Covering: 100% cotton.