Designed by the world renowned physiotherapist Robin McKenzie, this large version of the Original McKenzie Round Lumbar Roll, when used correctly, can help prevent the onset of back problems, and help reduce a users existing neck and back pain by improving posture.Produced to the highest quality and specifications this Large Round Lumbar Roll is made using medium density foam and therefore offers a medium level of firmness. The Original McKenzie Round Lumbar Roll was the first ever lumbar roll to be produced in the world and although the lumbar roll looks quite bulky, it compresses down very easily in use whilst still providing the user with the appropriate level of support. Providing effective support and delivering real results, Original McKenzie Lumbar Rolls are the genuine article and are ideal for use in the home, the office or the car. The Round Lumbar Roll is also available in a smaller 4\" diameter version in this area of our shop.