The Sterling Series 4000 Pocket Sprung memory foam Mattress is topped with pressure-relieving memory foam, this doesn’t only give a luxurious feel, the Sterling Series 4000 memory also relieves aches and pains throughout your body, while this mattress is soothing your muscles it improves circulation granting a restful night’s sleep that anyone could yearn for. The Sterling Series 4000 memory is carefully hand-tufted and hand-stitched to match absolute perfection from exceptional craftsmanship. This Sterling mattress consists of pocket springs this means the mattress is very responsive and adapts to your bodies shape and movement.