The Silentnight Memory Cool 3000 Mirapocket Box Top Mattress offers cooler, sink-in comfort that shapes to your body. It features 2000 Mirapocket® springs that individually adjust to your body weight and movements, complemented by a layer of 1000 mini springs for enhanced comfort and improved breathability. The head-to-toe spring alignment minimizes partner disturbances, while the parallel spring design provides edge-to-edge support for undisturbed comfort. Graphite infused Memory Cool™ foam relieves pressure on muscles and joints and actively transfers heat away, creating a 15% cooler sleep environment. This mattress is finished with a sumptuous box top for luxurious comfort and is backed by a 5 Year Guarantee. It is handmade in the UK by Silentnight, the UK's most trusted sleep brand. Dimensions: King Size L200 x W150 x D36.5cm. Material Type: 100% Polyester. Mattress Filling: Graphite Infused Memory Foam. Mattress Type: Pocket. Product Care: Wipe clean only. Delivered to room of choice with packaging removed. To maintain optimal condition, rotate your mattress regularly from head to foot to ensure even distribution of fillings.