A popular choice from Silentnight, this mattress combines indulgent, comfortable memory foam with zoned support to provide a better night\'s sleep every night. The unique zoned Miracoil spring system offers comfort and support for all shapes and sizes. Unlike an ordinary circular spring system, Miracoil\'s unique shape has twice as many springs offering improved pressure relief, edge to edge support for maximum sleep space and zoned support right where you need it most. Tried and tested Miracoil Spring System also has enhanced durability providing superior comfort over many years. Our Miracoil spring system will also offer the following benefits:* Edge to edge support providing more personal sleep space* No roll together ensuring less partner disturbance* Zoned support for perfect spinal alignment* Pressure relief for a comfortable night\'s sleep The sumptuous layer of memory foam offers responsive comfort, as it gently hugs the contours of your body and provides great pressure relief. Purotex cover, treated to reduce moisture and dust-mite allergens to create a drier, fresher and all-round healthier mattress. This mattress is hypoallergenic and Allergy UK approved. The cover has a soft knit surface. Please note, unfortunately we cannot deliver this item to the Channel Islands. * For health and hygiene reasons, we are unable to offer refunds or exchanges on mattresses unless they are returned unused and in their original packaging. For more information please see our Easy Returns section. For more information on different mattress types, please visit our Mattress buying guide. [Click here for more information.](https://www.dunelm.com/info/buying-guides/mattresses-and-mattress-toppers-buying-guide) [Click here](https://www.dunelm.com/infodocs/downloads/Furniture-Sizing-Guide.pdf) to check out our handy sizing guide to help you find out if you’ll be able to get your new mattress into your home.