The best mattresses are not the thickest ones. Depth sells beds because it is the one number a listing can shout, but what decides whether you wake up comfortable is the top few inches, how the thing handles body heat and whether it pushes back where you are heaviest. A fourteen inch bed built from soft foam can sleep worse than a ten inch one built properly.
These seven are all queen size and all arrive compressed in a box. They cover the jobs people actually buy a mattress for: a grid that does not sleep hot, a firm surface for back sleepers, coils for people who hate sinking, and a cheap spare for a guest room. Every construction detail below is the manufacturer’s own description.
Mattress Comparison: Height, Top Layer and Feel
| Mattress | Height | Comfort layer | Feel |
|---|---|---|---|
| Purple Mattress | 9.25 inch | GelFlex Grid | Medium firm |
| PurpleFlex | 8 inch | GelFlex Grid | Firm |
| Zinus Green Tea | 12 inch | Memory foam | Medium firm |
| Novilla 14 inch | 14 inch | Gel memory foam | Medium |
| Sweetnight CoolNest | 14 inch | PCM and gel foam | Medium |
| Sleepmax Mist | 14 inch | Euro top over coils | Medium |
| Novilla 8 inch | 8 inch | Gel memory foam | Medium firm |
1. Purple Mattress: The One That Does Not Sleep Hot
Purple’s selling point is not foam at all. The top two inches are a gel polymer moulded into an open grid, which Purple says cradles the hips and shoulders while keeping the spine aligned, and because the grid is full of air channels rather than solid material, heat has somewhere to go. The company describes the result as temperature neutral.
It is sold as a medium firm bed for every sleeping position, with edge support foam and a base layer that Purple says keeps the mattress stable getting in and out. The grid feels unlike anything else on this list, which is the reason to try it and also the reason some people send it back.
What it does well
- Grid runs cooler than solid foam
- Medium firm suits most positions
- Edge support resists sinking
What to know before buying
- The grid feel divides people
- Heavier than foam of the same size
2. PurpleFlex: Best Firm Mattress for Back Sleepers
The same two inch GelFlex Grid sits on a shallower eight inch build, and Purple tunes this one firm rather than medium firm. It is aimed squarely at back and stomach sleepers, the two positions that suffer most on a soft bed because the hips drop and the lower back takes the strain.
Everything else carries over: the air channels through the grid, the edge support foam and the same temperature neutral claim. At eight inches it is the shallowest bed here apart from the budget Novilla, which makes it a sensible match for a bed frame with a low rail.
What it does well
- Firm support for back and stomach sleepers
- Same cooling grid as the flagship
- Shallow enough for low frames
What to know before buying
- Too firm for most side sleepers
- Eight inches looks thin on a tall frame
3. Zinus Green Tea Memory Foam: Best Budget Mattress
Zinus built the boxed mattress category and the Green Tea line is the reason. Twelve inches of memory foam with what Zinus calls patented zoned pressure relief, a breathable knitted cover and a medium firm feel, sold at a price that makes the premium beds here look like a different class of purchase.
The green tea extract and charcoal in the foam are there to neutralise odours, which matters more than it sounds: compressed foam arrives with a smell, and Zinus says any mild off-gassing fades. This is the default answer for a guest room, a first flat or a teenager who will outgrow it.
What it does well
- The cheapest credible bed here
- Zoned foam rather than one slab
- Odour control built into the foam
What to know before buying
- Memory foam traps more heat than a grid
- No coils, so less bounce
4. Novilla 14 Inch Gel Memory Foam: Best Thick Foam Mattress
Fourteen inches of foam in three layers, which Novilla says absorbs noise and vibration when someone moves, the specific complaint that drives couples to replace a bed. The company claims thirty percent more gel in this version to raise how much heat the foam can absorb and to keep air moving through it.
Thick foam is a particular feel: you settle into it rather than onto it. If you have slept on a hotel bed and wished it were softer, this is closer to that than anything else here except the Sweetnight. All the foam is CertiPUR-US certified.
What it does well
- Motion barely travels across the bed
- Deep, enveloping foam feel
- Certified foam throughout
What to know before buying
- Fourteen inches needs deep fitted sheets
- Settling feel is not for everyone
5. Sweetnight CoolNest: Best Mattress for Hot Sleepers
Sweetnight attacks heat from two directions. The comfort layer pairs a phase change material foam with gel infused memory foam, and the cover uses a 3D woven structure that the company claims improves breathability by thirty five percent against its previous cover. Phase change material absorbs heat as it changes state rather than simply conducting it away.
Underneath, a five zone layout firms up under the hips and softens at the shoulders, and the multiple foam layers are there for motion isolation. If your complaint about your current bed is that you wake up too warm, this is the one on the list built specifically for that.
What it does well
- Two separate cooling systems
- Five zone support rather than flat foam
- Good motion isolation
What to know before buying
- Cooling claims are the maker’s own
- Still a foam bed, not a coil one
6. Sleepmax Mist Hybrid: Best Mattress With Coils
The only hybrid here. Pocketed coils under pressure relieving foam and a Euro top, which Sleepmax says distributes weight and helps spinal alignment while keeping more of the bounce that all-foam beds lose. Coils also move air in a way solid foam cannot.
Sleepmax points to reinforced edge support to stop sagging and reduce the chance of rolling off, and says the materials are CertiPUR-US and OEKO-TEX Standard 100 certified and free from fiberglass. Fiberglass free is worth noting: it is used as a fire barrier in cheap beds and causes real problems if the cover is ever removed.
What it does well
- Coils give bounce and airflow
- Reinforced edges
- Fiberglass free with two certifications
What to know before buying
- Coils transmit more motion than foam
- Euro top adds height
7. Novilla 8 Inch: Best Cheap Spare Mattress
Eight inches of gel infused memory foam over support layers, in a box, at the bottom of the price range. Novilla claims proper spinal alignment and even weight distribution, which is a reasonable thing to ask of a bed this thin as long as nobody heavy is sleeping on it every night.
The knitted cover is there for airflow and the foam is CertiPUR-US certified. Treat it as what it is: a spare room bed, a bunk, a first mattress, or the thing you put on a frame you are not sure you are keeping.
What it does well
- Cheapest bed on the list
- Certified foam despite the price
- Light enough to move alone
What to know before buying
- Too thin for heavier sleepers
- Will not last like a thicker bed
What the Certifications on a Mattress Actually Mean
Two labels come up repeatedly in these listings and they are not the same thing. CertiPUR-US tests the polyurethane foam itself for restricted substances and for low volatile organic compound emissions. It says nothing about how the bed feels or how long it lasts. OEKO-TEX Standard 100 covers the textile side, the cover rather than the core.
Neither is a quality rating, and both are common enough that their absence is more informative than their presence. The detail actually worth hunting for in a listing is whether the bed is fiberglass free, because fiberglass is the cheap way to meet the fire rule and it is miserable if the cover ever comes off.
Why Every Mattress Sold in the US Has a Fire Barrier
Every mattress sold in the United States has to resist an open flame test set out in 16 CFR Part 1633, the federal standard for the flammability of mattress sets. Makers meet it with a barrier layer wrapped around the foam core, and what that barrier is made of is up to them.
The cheap option is woven fiberglass, which works but sheds if the cover is unzipped and washed. The alternatives are rayon and silica blends, which cost more and are the reason better listings say fiberglass free in the first line. If a listing does not say, assume it is not, and never remove the cover.
It is also why no mattress here can be bought without a cover, and why a bed that arrives smelling of chemicals is usually just compressed foam breathing out rather than anything to worry about. Air it for a day before deciding anything about it. If you are setting up a bedroom from scratch, our picks for the best air purifiers cover the other half of the air quality question.
Which Mattress to Buy
For most people the Purple Mattress is the one to take seriously, because the grid solves the problem foam cannot: it gives at the hips without turning into a heat trap. Back and stomach sleepers should take the firmer PurpleFlex instead, and anyone who wants bounce rather than sink should take the Sleepmax hybrid for its coils.
If the budget is the constraint, the Zinus Green Tea is the bed to buy and has been for years. Hot sleepers should go to the Sweetnight for its phase change layer, couples who wake each other should take the fourteen inch Novilla for motion isolation, and the eight inch Novilla is a spare room purchase rather than a main bed. A clean floor helps a new bed last, and our best robot vacuums list covers that.
Frequently Asked Questions
How long does a boxed mattress take to expand?
Most makers ask for 24 to 72 hours before judging the feel, and the bed is usable well before that. A new mattress often arrives with a smell from the compressed foam, which fades as it airs out.
Is a thicker mattress better?
No. Depth tells you how much material is in the bed, not how it is arranged. A 9.25 inch bed with a well engineered comfort layer can support you better than a 14 inch stack of soft foam, and thicker beds need deep pocket sheets.
Do I need a box spring?
Not for any of these. Boxed mattresses are built for a solid platform, a slatted frame with close slats, or the floor. A traditional box spring can leave a foam bed unsupported between the coils.
What does fiberglass free mean on a mattress listing?
It means the fire barrier required by federal rules is made from something other than woven fiberglass. It matters because fiberglass sheds if the cover is removed, which is also why no mattress cover here should be unzipped and washed.
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