Looking for a super firm sleep? The Rock Hard Mega Firm Mattress has you covered. Its 1500 pocket springs line up your spine just right, packed with firm polyester for a cozy yet mega-firm feel. Steel piping around the edge keeps it tough and roomy—no roll-off here. It’s got air vents for a fresher nights sleep. Double-sided with turning handles, flip it every few months for long life. Recyclable, and backed by a 5-year guarantee, it’s no-nonsense support that’ll wake you up refreshed!.