Hi Matthew, The latex topper is very good but if you are finding your existing latex too firm then adding another layer of latex might not be the best solution. Our latex overlays are a medium denisity and we rarely have any issue with them being to firm. Still i would feel most comfortable having a chat first and making sure that it fits your needs. Can you please give me a call to discuss at a time that is convenient for you. 03 8585 6685. Warm regards Brett Parnham