What is a pocket spring mattress?

A pocket spring mattress has a core of barrel-shaped metal springs, each sewn into its own fabric pocket. Because every spring responds to pressure independently, the mattress adapts closely to your body contours and you don't feel movement on one side of the bed from the other. Our pocket spring cores come with seven ergonomic comfort zones as standard, including a softer shoulder zone and a firmer hip zone. All springs are electro-thermally hardened for a longer lifespan.