SENSUS MATTRESS : 4 3/4” thick core in 38kg/m3 bedding-quality Bultex, overlaid on 1 side with 2 3/4” thick viscoelastic `memory’ foam which moulds perfectly to the shape of the body whilst minimising the effect on the body & circulation. Ticking in 100% ecru-colored fire-retardent cotton, treated with `HealthGuard’ (antibacterial, fungicidal): this is quilted on both sides with 250g/m2 polyester and zipped once lengthways and once crossways (the CMHR version is not cover removable). SENSUS SUPERIOR MATTRESS : Lower section: bedding-quality Bultex foam 38 kg/m³ with morphological sculpting (varying in depth between 4” and 5”). Upper section: 2 3/4” – 3 1/2” thick viscoelastic memory foam which moulds perfectly to the shape of the body whilst minimising the effect on the body and circulation. Central layer in 1/4” thick 3D aerated polyester weave. Ticking in 64% polyester/30% viscose/6% elastane; 250 g/m2 polyester quilting on the head and foot sections and interior, with viscoelastic foam on the exterior and sides.