Royal Coil mattresses are designed to give excellent support, and this mattress is no different. This luxury mattress will give you all the support that you need with a special mattress topper and 2500 pocket spring. This mattress has a unique spring system, with special layers to regulate your heat throughout the night. It also comes in 4 different sizes. KEY FEATURES Foam Encapsulated Sides 5 Year warranty With Spring System Box Top Pillow Top 7 Zone Pocket Sprung System Egyptian Cotton Finish