Designed by the world renowned physiotherapist Robin McKenzie, this is the larger version of the Original McKenzie Heavy Duty Lumbar Roll, which 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 Heavy Duty Lumbar Roll is made using high density foam and therefore offers a higher level of support. The Original McKenzie Heavy Duty Lumbar Roll has been designed to deal with a more robust level of use and although the heavy duty 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 Original McKenzie Heavy Duty Lumbar Roll is also available in a smaller 4\" diameter version in this area of our shop.