The layers of polyester, felt & memory foam provide a comfortable & durable sleeping surface, whilst the pocket sprung base provides a luxurious feel, & features 1000 individual springs each encapsulated in a fabric pocket. Unlike interconnected coil mattresses, pocket springs work independently of each other, & the flexibility in the pocket springs allows the mattress to respond to the shape, weight, size, movement & sleeping patterns of your body. Pocket sprung mattresses are also an advantage if there is a considerable weight or size difference between you & your partner.