Have a dreamy night's sleep with the Extra-Thick Comfort Memory Foam Mattress Open coil spring design with a layer of memory foam  Extra-thick depth of approximately 11-12" for ultimate relaxation Has a medium firmness so you can feel comfortable at night Made with hypo-allergenic and anti-bacterial filling Includes a cooling touch cover perfect for the hot months Choose from 6 UK sizes: small single, single, small double, double, king size, or super king size See Full Details for dimensions  Buying Options: 39 pounds instead of 3.9 pounds for the Small Single Mattress - save 90% 49 pounds instead of 3.9 pounds for the Single Mattress - save 87% 69 pounds instead of 4.9 pounds for the Small Double Mattress - save 84% 79 pounds instead of 4.9 pounds for the Double Mattress - save 82% 99 pounds instead of 4.9 pounds for the King Mattress - save 80% 1.9 pounds instead of 4.9 pounds for the Super King Mattress - save 70%