Zinus 12-inch Green Tea memory foam mattress

Zinus is a long-listed brand in this exact size and height, and the reason this particular mattress earns a place is two lines most competitors leave out: it states fiberglass-free explicitly, and it states adjustable-base compatibility explicitly. Both sound like small things and neither is, so both get their own section below. Beyond that it is a familiar proposition — 12 inches of green tea infused memory foam, a medium feel, CertiPUR-US foam under an OEKO-TEX certified cover, and a 10-year limited warranty.

1 · The compatibility line in writing

Zinus 12 Inch Green Tea Essential Memory Foam Mattress, Queen

The only mattress here whose listing states adjustable-base compatibility outright rather than leaving you to infer it from the foam, and it names the fire barrier that replaces the fiberglass.

Height

12 in

Our spec score

9.0/10

Best for

The compatibility line in writing

$219.99 · Check price

As of September 21, 2026. #ad How we’re funded

What works

• The listing states adjustable-base compatibility in writing — the one line every other mattress on this site leaves you to infer from the fact that foam bends
• Fiberglass-free is published and, unusually, so is what replaces it: a carbon-rayon flame barrier, named rather than implied. Fiberglass in a fire barrier is only a problem if the cover comes off, and covers do come off
• Two certifications rather than one — CertiPUR-US on the foam and OEKO-TEX Standard 100 on the cover — plus a published 10-year warranty and a 500 lb queen weight limit

What doesn’t

• Medium feel is a manufacturer's word, not a measurement — expect to disagree with it
• This is the Essential build, so there is no cooling-gel claim on it. If sleeping hot is your complaint, that is the wrong variant and possibly the wrong construction
• 12 inches is a lot of mattress. On a tall base it can put the sleep surface higher than you want

Published specifications

Published specifications for the Zinus 12 Inch Green Tea Essential Memory Foam Mattress, Queen

Height	12 inches
Full dimensions	80" L x 60" W x 12" H
Construction	Green tea infused memory foam over a support base
Firmness	Medium feel
Fiberglass	Fiberglass free, with a carbon-rayon flame barrier named in its place
Certification	CertiPUR-US foam and an OEKO-TEX Standard 100 cover
Adjustable-base rated	Stated compatible with platform beds, box springs, slatted frames and adjustable bases
Weight limit	500 lb in queen
Warranty	10 years limited

Read from the product listing on 2026-09-10. Blanks are specifications the manufacturer does not publish, not figures we could not be bothered to find.

How the score was reached

Rubric breakdown for the Zinus 12 Inch Green Tea Essential Memory Foam Mattress, Queen

Height and stack planningHeight and full dimensions published to the inch.	9
Base compatibilityAdjustable-base compatibility stated explicitly on the listing, rather than inferred from the foam.	10
Firmness disclosureMedium feel stated, but no measured firmness scale.	7
CertificationFiberglass-free with the flame barrier named, CertiPUR-US foam and an OEKO-TEX certified cover.	10
Mean, rounded to one decimal	9.0

The fiberglass-free point, and why it matters

Every mattress sold in the US must meet a federal open-flame flammability standard. One common and cheap way manufacturers meet it is a fiberglass fire barrier sewn inside the cover. That is fine while the cover stays on — and a genuine problem if anyone ever unzips and removes the cover, because disturbed fiberglass is miserable to clean up and gets everywhere. A mattress that states fiberglass-free is telling you it met the same legal standard by some other means, which matters precisely because covers do come off for washing.

So the Zinus is not safer in the fire it is designed to survive — every mattress on the market meets that standard. It is safer to live with if the cover ever comes off, which is the realistic scenario for anyone who wants to wash bedding thoroughly. That is a modest, real advantage, stated plainly rather than dressed up.

The case for it

Beyond the fiberglass statement, the arguments are the ordinary ones, plus one that is not. All-foam construction flexes on an adjustable base where a rigid innerspring often will not — and here you do not have to take our word for the inference, because the listing names adjustable bases among the frames it works with. Two certifications rather than one, CertiPUR-US on the foam and OEKO-TEX Standard 100 on the cover, with a 10-year limited warranty and a 500 lb queen weight limit published alongside. And it comes from a brand with a long listing history in this size, which is a weak signal but a real one: a mattress that has been sold in volume for years has a service record behind it that a brand-new entry does not.

The height it will give you

Like the EGOHOME, this is 12 inches, and on this site that is a height decision first. Your sleep surface sits at the base or frame height plus 12 inches, and that total is what determines whether standing up is easy or a struggle. Zinus publishes the full dimensions here — 80 by 60 by 12 inches — so matching it to a frame is arithmetic rather than a question for the seller. Add the 12 inches to your frame, check it against your target, and decide from the number.

The case against it

Three reservations, honestly. Medium feel is a manufacturer's word with no scale behind it, so it tells you a direction and not much more. This is the Essential build, which means no cooling-gel claim — if waking up hot is the complaint that brought you here, this is the wrong variant and quite possibly the wrong construction. And 12 inches is a lot of mattress: on a base that already sits tall it can put the sleep surface above the height you can comfortably leave.

What we could not verify

• Which adjustable bases, specifically. Compatibility is stated, but no maximum flex angle or base model list is given, so an unusually aggressive base is still worth a question. Test it yourself.
• Edge support. Not published by any mattress listing, and it is what decides how easy standing up is. Why it matters.
• How firm a medium feel really is. No measured scale, and not comparable to anyone else's medium.
• What the 10-year warranty covers. The term is published; what counts as a valid claim, and what indentation depth qualifies, is not.
• Shipping weight and durability. The mattress will still arrive as a heavy boxed parcel — handling it.

How it compares to the EGOHOME

The two sit close together and split on disclosure. The EGOHOME publishes its full dimensions to the inch and CertiPUR-US, and it is the one we rank first overall. The Zinus now publishes full dimensions too, and answers two questions the EGOHOME does not: the fiberglass-free statement with the flame barrier named, and adjustable-base compatibility in writing rather than by inference. Neither of the two publishes a cooling claim, so heat is not the axis they split on. If your worry is a cover you intend to wash, or a base you need the maker to vouch for, lean Zinus; if it is simply the plainest, best-known 12-inch foam queen, lean EGOHOME.

Where it might not suit you

The same two cautions that apply to any 12-inch all-foam mattress apply here, plus one of its own. If a soft edge is your real obstacle to getting up, foam is the construction least likely to solve it, and a reinforced hybrid perimeter is the fix — the foam-versus-hybrid comparison explains why. If your base already sits tall, 12 inches on top may overshoot your target height. And the one specific to this model: it is the Essential build, with no cooling claim on it at all. If you already know you sleep hot, the Yaheetech is the only foam queen we track that publishes a cooling-gel construction, and the foam-versus-hybrid comparison is worth reading before you buy any of them.

Who should buy it

Someone buying for an adjustable base who would rather have the maker say so than take our inference for it, and who values the fiberglass-free statement — realistically, anyone who intends to remove and wash the cover, or who has been unsettled by fiberglass stories and wants the worry off the table. If the exact finished height and the plainest spec sheet matter more, the EGOHOME is the cleaner planning choice; if you want three published foam layers, the Yaheetech is the value pick. Whatever you land on, add deep-pocket sheets so the first fold of the base does not strip a corner.