The quilted top is the thickest foam layer at 5.0 cm/2 inches. It’s made of soft foam and fiber fill, and helps give the mattress its high sinking. The memory foam layer in the lumbar area is very thin, but it may help add padding under your lower back if you sleep on your back, or help with pressure relief for your hips if you sleep on your side. The polyfoam transition layer is firmer and helps keep you from feeling the individual comfort layer springs.

There’s another thin layer of polyfoam (1.9 cm/0.7 inches) under the comfort layer springs. Those who compress the upper layers will also sink into it, and it helps with pressure relief.

Each individual support coil has a square of polyfoam sewn into the pocket above it. These cubes are 5.0 cm/2 inches high and help give the support coil layer a soft feel overall. If you compress the layers above, they will help relieve pressure for the heavier parts of your body.