Serta Five Star 12" Mattress in a Box
Serta's five-star mattress in a box, a supportive upgrade for a guest room or main bedroom.
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The Serta Five Star 12" is a firm hybrid mattress sold compressed in a box, built with an innerspring core topped by gel memory foam. It comes in a Queen at 60 by 79.5 inches and 12 inches thick, and Serta lists it as compatible with adjustable beds. At $337.18 at Wayfair as of November 5, 2026, it sits at the low end of what this model has sold for, and only three stores carry it new, so comparison shopping is quick.
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With 4.3 out of 5 from 284 ratings, most owners describe it as a solid, supportive mattress for the money. Complaints tend to center on firmness and on how it feels after the first few months.