Is this mattress really extra firm?

Yes. Owners consistently describe it as hard, not medium-firm. If you want cushioning, choose a softer model.

Most side sleepers and anyone who likes a plush feel. It is aimed at back and stomach sleepers and heavier adults.

Does it need a box spring?

No. A 10-inch all-foam mattress works on a platform bed, slatted frame or adjustable base. A box spring adds height but is not required.

How does it compare with a hybrid mattress?

It has no coils, so it has less bounce and weaker edge support than a hybrid. In return it isolates motion better and costs less than most hybrids.

Yes. The mattress is dual-sided, so you can flip it to spread wear. Do it with a helper, since a queen foam mattress is heavy.

Does the foam smell at first?

CertiPUR-US foam can have a mild new-foam odor that fades within a few days after unboxing and airing out.

What do buyers say about the Dyonery Queen Extra Firm Memory Foam Mattress?

Buyers like: Rated 5 out of 5 stars by reviewers.

Dyonery Queen Extra Firm Memory Foam Mattress

Best price now

$266.00at TargetChecked 6 h ago

Prices are checked against each store and labelled with when.

Visit Target

Dyonery Queen Extra Firm Memory Foam Mattress

Best price now

$266.00at TargetChecked 6 h ago

Prices are checked against each store and labelled with when.

Visit Target

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Lowest price today: $266.00 at Target (checked Nov 11, 2026).

Our take on the Dyonery Queen Extra Firm Memory Foam Mattress

The Dyonery Queen is a 10-inch memory foam mattress built for people who want a hard, supportive sleep surface. Its dual-sided flip design lets you rotate the foam to extend its life, and the foam is CertiPUR-US certified for low emissions. It suits back and stomach sleepers and heavier adults who sink into softer beds. Against mainstream memory foam queens, it is firmer and simpler, with no cooling gel or coils, so hot sleepers and side sleepers who want cushioning should look elsewhere.

Best forBack and stomach sleepersHeavier adults who want a hard surfacePeople with back pain who dislike soft bedsShoppers who want a simple foam mattress

Pros

Extra firm surface holds the spine straight
Dual-sided design can be flipped to even out wear
10-inch profile fits standard sheets and frames
CertiPUR-US certified foam
Memory foam relieves pressure at shoulders and hips

Cons

Too firm for most side sleepers
All-foam build has no coils for bounce or edge support
No cooling gel or breathable cover mentioned
Heavy and awkward to flip alone

Dyonery Queen Extra Firm Memory Foam Mattress prices at every store

TargetNew
In stock
$266.00Checked 6 h ago
Visit Target

Dyonery Queen Extra Firm Memory Foam Mattress price history

Lowest price we've seen: $266.00 on Nov 11 at Target. Tracked across 1 store since Nov 11.

What reviewers say

Buyers rate it highly and describe it as genuinely extra firm, which back-pain sufferers tend to like. The main complaints come from side sleepers who find it too hard.

What people mention

FirmnessPraisedBuyers say it is truly extra firm, not just firm, and holds up under weight.
Back painPraisedSeveral owners report less back pain after switching to it.
Side sleepingCriticisedSide sleepers say it feels too hard and leaves shoulders and hips sore.
Edge supportCriticisedThe foam compresses near the edges, so sitting on the side feels unstable.
Flip designMixedOwners like that it can be flipped, but note it is heavy to turn alone.

From Target

10-inch extra firm memory foam mattress
Dual-sided, flipable design
Designed for back pain and pressure relief
CertiPUR-US certified

Sizes: Short Queen

About the Dyonery Queen Extra Firm Memory Foam Mattress

This is a 10-inch memory foam mattress in a queen size. It has an extra firm feel and is designed for back pain and pressure relief.

The mattress is dual-sided, so it can be flipped. The foam is CertiPUR-US certified.

Size: Queen
Thickness: 10 inches
Material: Memory foam
Firmness: Extra firm
Design: Dual-sided, flippable
Certification: CertiPUR-US certified

What buyers say

Buyers like

Rated 5 out of 5 stars by reviewers

Specifications

Size: Queen

Questions and answers

Is this mattress really extra firm?: Yes. Owners consistently describe it as hard, not medium-firm. If you want cushioning, choose a softer model.
Who should avoid it?: Most side sleepers and anyone who likes a plush feel. It is aimed at back and stomach sleepers and heavier adults.
Does it need a box spring?: No. A 10-inch all-foam mattress works on a platform bed, slatted frame or adjustable base. A box spring adds height but is not required.
How does it compare with a hybrid mattress?: It has no coils, so it has less bounce and weaker edge support than a hybrid. In return it isolates motion better and costs less than most hybrids.
Can it be flipped?: Yes. The mattress is dual-sided, so you can flip it to spread wear. Do it with a helper, since a queen foam mattress is heavy.
Does the foam smell at first?: CertiPUR-US foam can have a mild new-foam odor that fades within a few days after unboxing and airing out.
Where is the Dyonery Queen Extra Firm Memory Foam Mattress cheapest?: At Target, for $266.00, as of our latest check.
What do buyers say about the Dyonery Queen Extra Firm Memory Foam Mattress?: Buyers like: Rated 5 out of 5 stars by reviewers.