233 thread count cotton cover filled with 1000gsm microfibre filling. 8cm deep with elasticated corner straps. Cascade Home Mattress Topper Features: Washable 100% Cotton Cover Filling: 100% Polyester Like Down Mattress Enhancer Information Available in: Double - King - Super King 4.49 5 DL D False Bedding 5.99 5.99 Cascade Home Extra Deep Mattress Topper | Kaleidoscope