DPM Spine Deluxe Point-to-Point MattressSPINE DELUXE Composite support hardness LEVEL 4 8 1 2 3 4 5 6 7 8 9 10 Soft Hard This mattress adopts an adaptive composite support layerhardness coverage LEVEL 4 (firm) LEVEL 8 (relatively hard) It can provide a cloud like enveloping sensation (Level 4) and offer strong rigid support to the spine during deep sleep (Level 8), intelligently adapting to different body types and sleeping positions Materials & Specs Thickness 12 inches 30 cm (0. 5cm)