The kub comfort mattress provides superior support for head neck and spine features provides superior support for head neck and spine deluxe high tensile spring interior dent resistant high quality orthopaedic foam mattress luxury quilted hypo allergenic removable washable cover waterproof wipeable membrane movable in line with nappy area features provides superior support for head neck and spine deluxe high tensile spring interior dent resistant high quality orthopaedic foam mattress luxur