This luxury comfort mattress features a 3-zone ReActive™ pocket spring system. Each ReActive™ spring has 8 active turns - independently and actively sensing your shape and weight distribution, providing comfort and support exactly where you and your partner need it. The Natural Comfort collection is filled with luxurious layers of sustainable, natural fibres including the finest wool. Wool responsibly sourced from farmers who really care about the welfare of their sheep, land and reducing their environmental impact.