Innerspring and pocket coil mattresses differ primarily in their coil construction and resulting performance characteristics. Innerspring mattresses feature interconnected metal coils, often in an hourglass shape such as Bonnell or continuous coils, which move together as a unit, providing a firmer, more traditional feel with greater bounce.234 This interconnected system can lead to more motion transfer across the bed, which may disturb sleep partners.24 In contrast, pocket coil mattresses use individually wrapped coils, each encased in a fabric pocket, allowing them to move independently and offer targeted support, better body contouring, and improved motion isolation.234 +4 This design reduces motion transfer, making pocket coil mattresses ideal for couples or light sleepers.256 +1

Pocket coil mattresses generally provide better pressure relief, especially for side sleepers, due to their ability to conform to the body’s shape and support pressure points in the hips and shoulders.256 +1 They also tend to offer better spinal alignment and are less prone to squeaking over time due to reduced friction between coils.56 Innerspring mattresses, however, are typically more affordable and may be preferred by stomach sleepers or those who sleep hot, as they often provide better airflow and a firmer surface.256 +1

While pocket coil mattresses are generally more expensive and durable, with a lifespan of 5 to 10 years or more with proper care, innerspring mattresses can sag over time, especially if not maintained.25 Some pocket coil mattresses are designed to be one-sided and should not be flipped, while others may be flippable depending on their construction.5 Ultimately, the choice between the two depends on individual preferences, including desired firmness, sleep position, budget, and sensitivity to motion transfer.256 +1