UltraGel® is Silentnight's new and clever comfort layer, offering supreme comfort, and unparalleled pressure relief; it comforts you as you lie down, but bounces back too, allowing you to toss and turn effortlessly without any partner disturbance. Enjoy the responsive bounce of our intelligent gel infused comfort layer, designed to adapt to your movements during sleep and proven by science to relax your body, for deeper, more energising sleep. The Miracoil® Support, features a uniquely designed spring system that runs from head to toe. As well as keeping your spine aligned, this helps prevent you and your partner from rolling together, so you can both enjoy a peaceful, undisturbed night's sleep. UltraGel® is our most breathable foam yet with a structure that lets air circulate, so you won't overheat during sleep and this foam distributes pressure and body weight evenly offering soothing pressure relief for aches and pains. Handmade in the UK by Silentnights expert sleep team, ensuring you have a restful and refreshing sleep.Dimensions: Single L190 x W90 x D29.5cmDimensions: Small Double L190 x W120 x D29.5cmDimensions: Double L190 x W135 x D29.5cmDimensions: King L200 x W150 x D29.5cmDimensions: Superking L200 x W180 x D29.5cmWeight of Product: 16.5kg, 22kg, 25kg, 29.5kg, 35kgMaterial Type: 100% PolyesterMattress Rating: MediumMattress Filling: Ultra gelMattress Type: MiracoilProduct Care: Wipe clean only Manufacturer's 5-year guarantee Delivered to room of choice and packaging removed Made in the UKTo keep your mattress in great condition, we recommend that you rotate your mattress regularly. This means moving your mattress from the head of your bed to the foot - from top to bottom. Rotating your mattress regularly is important because it helps to keep the fillings evenly distributed.