Expertly designed and crafted in Yorkshire, the Tuft & SpringsSerenity 5000 Mattress features a plush pillowtop plumped with wool, cotton and cashmere for a truly serene night's sleep. Support where you need it most Up to 5000 cleverly engineered pocket springs work tirelessly while you sleep, targeting support to your every pressure point. With a medium firmness, these springs are perfect for side-sleepers, supporting your hips and shoulders to keep your spine nicely aligned. The pillowtop - essentially a stitched-in mattress topper - is brimming with cushioning comfort fibres, such as temperature-regulating wool and cotton, as well as silky soft cashmere. These fibres cushion your entire body, enveloping you in the warm embrace of a perfect night's sleep. Stretch, snuggle and snooze Reinforced edges ensure no side sagging occurs, allowing you to stretch out and feel supported across the entire surface of the Serenity 5000. Highly breathable and with additional side air vents, this