The traditional choice using metal coils. These offer more "bounce," stronger edge support, and better airflow for cooler sleep.

Known for "contouring" and pressure relief. It’s excellent for motion isolation (not feeling a partner move) but can sometimes retain body heat.

Generally require a softer to medium-firm surface that allows hips and shoulders to sink in, maintaining spinal alignment.

The "feel" of a mattress is dictated by its internal construction. The three most common types include: