Giselle Pillowtop Bamboo Mattress Topper5cm Bamboo Mattress Topper You might ask, why you do you get a topper? Toppers are not only for older mattresses. If you have a newer mattress that does not suit your personal preference for firmness, a topper can alter the feel of the bed to better suit you. The type of the topper only matters in whichever case. Featuring 1000GSM and Bamboo Ball Fibre filling, it is made to make sure it has the softness and comfort that you are after every night.