This winning combination of exceptional comfort and support makes the Jessica Mattress from Sleepeezee a gold-medal winner. The complex design is a combination of 1800 individual springs in the King Size version, along with layers of memory foam for extra support, and StayCool� Gel, which manages the moisture levels within the mattress and helps regulate the temperature so you stay cooler during the summer.A medium/firm rating means that this mattress offers more in the way of support but with no compromise on comfort. To give it that snuggle factor that we all want, it has a beautifully soft quilted cover so it looks as good as it feels. Made in the UK, it�s approved by the National Bed Federation and is guaranteed for a minimum of 10 years by Sleepeezee. The memory foam layer goes all the way to the mattress edges, giving you the maximum sleeping space � perfect if you like to spread out when you�re relaxing at night!The mattress body is made up of 1800 individual springs on the King Size model � 1000 Soft Tech� pocket springs and a further 800 traditional individually pocketed springs to form a firm yet responsive matrix that delivers outstanding support and with no compromise on comfort. This unique spring lattice is topped off by a 3cm memory foam layer, and a 3cm layer of StayCool� Gel.The hypoallergenic construction of the mattress means that there�s nowhere for dust mites to hide, creating a healthier environment and perfect for those who suffer from allergies or respiratory conditions such as COPD and asthma.Unlike double-sided mattresses, the Sleepeezee Jessica Mattress is a single-sided design, so there is no need to flip and turn the mattress regularly to prolong its life. However, we do recommend that it is turned �head-to-toe� every three months or so, and to make this easier you�ll find robust turning handles on the sides of the mattress.