Orthopedic Neck Posture PillowThe Orthopedic Neck Posture Pillow uses a contoured memory foam design to support the natural curve of your cervical spine. The curved profile means the centre of the pillow is lower than the edges, which keeps your head at a neutral height for back sleepers while the raised sides support side sleepers at the appropriate loft for their shoulder width. One size. Memory foam that molds to your neck shape and holds it through the night rather than