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The Beautyrest Black Series Three Firm is a king innerspring mattress that layers gel memory foam and self-response latex over triple-stranded pocketed coils. It is Beautyrest's mid-tier Black model, so it sits above the standard Black line in pressure relief and airflow but below the Series Four and Five. The firm feel suits back and stomach sleepers and heavier couples who want support without a rock-hard surface. Owners rate it well overall, though some find the firm surface too hard at first and a few report body impressions over time.
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Availability unknownSold by handup-02744 (99.2% positive, 202 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
Availability unknownSold by starsluckysales (100% positive, 3,000 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $2,849.00 on Nov 11 at City Mattress; highest $4,199.00 on Oct 30. Tracked across 12 stores since Oct 30.
Owners rate the Series Three Firm highly, praising its support and the way it isolates motion for couples. The most common complaint is that the firm surface feels harder than expected, and a minority mention sagging or impressions later on.
Experience the best of Beautyrest, featuring advanced temperature management technology, Micro Diamond memory foam, and advanced, Triple-Stranded Pocketed Coil technology. Self-Response latex offers a specialized upgrade for responsive pressure relief while maximizing airflow for cool sleep every night.






