a fluid - filled bladder - type mattress includes a plurality of panels periodically disposed at oblique angles between upper and lower surface members of the bladder mattress for suppressing motion . in one preferred embodiment , a single bladder chamber is filled with a liquid fluid , and panels comprising a plurality of planar membrane members are bonded along angular lines alternately and at oblique angles to the upper and lower surface members of the bladder in a herringbone bonding pattern to provide an open inner structure promoting wave energy dispersion and dissipation . a mattress embodying the invention minimizes horizontal motion and fluid wave propagation .