Upgrade your sleep with this Duck Feather & Down Mattress Topper. The extra-thick up to 5 inch depth and 2500 GSM high-density filling provide plush comfort and added support, ideal for refreshing firmer or worn mattresses. Finished with a down-proof T233 breathable 100% cotton cover, it helps regulate temperature, while box stitching and elasticated corner straps ensure an even fill and secure fit for lasting comfort.