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The Dyonery Extra Firm is a 6-inch foam mattress in twin size, built for a hard, flat sleep surface rather than cushioning. It suits bunk beds, trundles, guest rooms, kids' rooms and sleepers who want a board-like feel or need a firm base under a topper. Against typical 8- to 10-inch foam mattresses it is thinner and has less give, so side sleepers and heavier adults will likely find it too hard. Owners of firm mattresses in this class often note that the first nights feel very stiff and that the foam softens only slightly over time.
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Lowest price we've seen: $129.99 on Nov 11 at Best Buy. Tracked across 1 store since Nov 11.
Feedback on extra-firm foam mattresses like this one is split: buyers who wanted a hard, flat bed are satisfied, while those expecting cushioning call it unforgiving. The thin 6-inch build draws the most complaints about pressure points.
This is a twin size mattress from Dyonery with an extra firm feel. It is 6 inches thick and has a foam filling.
The mattress is white.
