Silentnight are renowned for developing exceptional mattresses, and have been helping the nation get a great night�s sleep for over 60 years. Their Mirapocket spring system is exclusive to Silentnight and provides you with exceptional support and comfort, with no roll-together or movement transference. That means an uninterrupted night�s sleep for both you and your partner, and a more refreshing wake-up in the morning!This mattress has a medium firmness rating, which means complete support but with a softer touch. That softness is enhanced by the knitted cover, which is also breathable and super-soft. The mattress is made in the UK and approved by the NBF. For your complete peace of mind, it comes with Silentnight�s 5-year guarantee. It�s 22cm deep, so you�re getting plenty of mattress for your money, making this a great value choice that will give you thousands of nights� restful sleep!The key to a good night�s sleep is neutral spinal alignment, which means that pressure points along the lower back, shoulders, and hips are eliminated. To achieve this, Silentnight have used 1000 of their exclusive Mirapocket springs in the King-Size model.Eco-Comfort Fibres are 100% recyclable and sustainable, so that your mattress doesn�t end up costing the earth. These fibres have also been proven to keep you cooler while you sleep, making them ideal if you suffer from night sweats or hot flushes. The Silentnight Essentials Mirapocket 1000 Mattress is vegan-friendly, meaning that no animal by-products are used in its manufacture.Normal mattresses tend to suffer from �side-sag� because of the lack of any reinforcing at the edges. This minimises the sleeping area and can lead to a disturbed night�s sleep. The Silentnight Essentials Mirapocket 1000 Mattress has reinforced edges, so side-sag is eliminated and the edges are more stable. So feel free to stretch out because you�ll be supported all the way to the edge!