The same great features as the Memory 4lb pillows plus the ability to increase the support and height with changeable inserts. Adjusts easily to 3,4,5 and 6 inch Heights. Comes with an extra set of firm inserts for additional height and support. Temperature sensitive memory foam shapes to the head and neck with body heat. Encourages natural contour of the cervical spine and offers optimum pressure relief. MADE IN THE USA.