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The Serta Classic 12 Inch is a firm, all-foam mattress with a tight top and a gel-infused memory foam layer over a three-zone support core. At 12 inches it sits in the mid-thickness range, so it fits standard sheets and most bed frames without a deep-pocket set. The gel foam is meant to pull heat away and keep the surface from sleeping hot. The best new price is $449 at JCPenney as of November 8, 2026, and only one store lists it new, so there is little price competition to shop around.
In stock
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Lowest price we've seen: $449.00 on Nov 8 at JCPenney. Tracked across 1 store since Nov 8.
Owner feedback on the Serta Classic line is mixed. People who want a hard, supportive bed tend to be satisfied, while side sleepers and couples often find it too firm and too still.
