HARLEY LUMBAR ROLL - CIRCULAR 4" Number: SP24001 Dimensions: 28cm (11") A Lumbar Roll for every seat. - 'D' type rolls are ideal on a flat backed seat, perhaps a car or office chair - Circular rolls are more suited to a padded or lounge type seat - Ideal for use in the home, office or car - Easily portable - take yours with you wherever you go roll is 28cm (11") long.