Key takeaways
- Independently pocketed coils give zoned support rather than one averaged surface.
- Excellent airflow, spinal support and resilience.
- Motion is absorbed locally, so a partner moving is less disruptive.
Pocketed coils let the mattress respond in zones instead of as one surface. They also carry air through the build, which is why a coil system stays cooler than an equivalent all-foam one.
A body does not press evenly into a mattress. Shoulders and hips load it far more than the waist or calves.
Because each pocketed coil compresses on its own, the surface can be firm where the load is heavy and yielding where it is light - which is what maintaining lumbar curvature during sleep actually requires.
A coil layer is mostly open space. Air moves through it freely and carries heat and moisture out of the middle of the mattress.
Orthopaedic research points to medium-firm, resilient surfaces rather than conforming foam for maintaining alignment, and a pocketed coil system is the most direct way to build one.