What are the downsides of mattress in a box?

The biggest issue with most mattress-in-a-box products is that they use a one-size-fits-all approach that ignores bodyweight. I frequently talk to upset people who bought a bed-in-a-box and it’s dipping within six months to a year. The problem starts with the foam materials and the design. Durability concerns with foam mattresses Most box mattresses use low to medium density polyfoam or memory foam as the primary support layer. From my experience pulling apart dipped mattresses, I can tell you that plastic-based foams lose resilience over time. The timeframe depends on foam density – low-density polyfoam can start sagging in as little as 1 year, while high-density versions might last 6-7 years max. Memory foam sits somewhere in between, usually around 3-6 years, depending on quality. The real issue is that you typically can’t find out the foam density spec before you purchase a mattress online. If you don’t know the spec, you don’t know if it will dip in 6 months or 10 years. Initial odour and off-gassing When the mattress expands from its compact box, there’s often an initial odour that can last from a few hours to a few days. This off-gassing comes from the compression process and the foam materials themselves. It’s not worse than traditional mattress industry products, but it’s not better either. I’ve had customers mention they hoped bed-in-a-box products would smell less since they’re not rolled, but that doesn’t seem to make the smell less annoying. Missing the “feel good when laying on it” test Here’s what I think is the biggest downside: buying a mattress online means you’re forgoing the number one priority that will determine if you get a good night’s sleep – actually laying on it before you buy. You wouldn’t ask a stranger on the internet what size jeans you should get. The same logic applies to mattresses. Trying the bloody thing is going to be much more economical than guessing.

Are beds -in-a-box as good as regular mattresses?

It depends entirely on the construction and whether it fits your bodyweight. The problem isn’t the compact packaging itself – it’s what’s inside the box. Box mattresses vs traditional mattress construction A quality mattress needs two things: the right support for your bodyweight and durable materials. Most bed in a box companies use all-foam construction (usually 25cm of polyfoam) because it’s cheapest to manufacture and ship. A traditional mattress with innerspring coils and proper spring tension matched to your bodyweight will typically outperform an all-foam mattress in a box. I’ve seen springs that last 40+ years. I’ve never seen polyfoam that lasts that long. Springs are extremely resilient when designed correctly. This is why many box companies have moved to hybrid models with pocket springs – they were trying to stop the returns from sagging foam cores. Materials matter more than packaging The best combination I’ve found is pocket springs matched to bodyweight with natural latex on top. Whether this arrives in a box or on a delivery service doesn’t matter nearly as much as the materials. Some bed in a box products could actually be decent if they offered different spring tensions for different weights, but the problem is variations create complexity. One spring tension means 5 size variations (single to king). Three spring tensions means 15 variations. Most companies won’t do this. If you’re under 75kg, under 30 years old, have no back issues, and are the type of person who “can sleep on anything,” a bed in a box might work fine for you. For the rest of us, we need to try harder to get proper spinal alignment and the right mattress.

What is the life expectancy of a bed in a box?

Honestly? Most foam mattresses in compact packaging will show noticeable softening within 1-3 years, and many need replacing by year 4-5. This is very different from a high quality mattress with good materials. Foam mattresses vs innerspring coils lifespan Here’s a rough guide based on my 14 years of making mattresses and opening up old mattress returns: Polyfoam: Low density: 1 year before noticeable dip Medium density: 4 years High density: 7 years max Memory foam: Low density: 3 years Medium density: 5 years High density: 6 years max Natural latex on pocket springs: I haven’t witnessed a dipped piece of real natural latex. The latex in customers’ old mattresses is still in perfect condition even after 10+ years. Springs properly matched to bodyweight last even longer. The problem with bed in a box durability is that companies use lower density foams to keep costs down and shipping weight manageable. There’s a conflict of interest – companies want profit, customers want quality.

Why are people no longer using box springs?

Modern pocket spring mattresses don’t need box springs anymore. The terminology gets confusing, but “box springs” (the old innerspring foundation units) are different from the pocket springs inside today’s mattresses. Bed frame construction has evolved Traditional mattress shopping used to mean buying a mattress and box spring set together. Those old box springs had large coils inside and were designed to work with older open coil (cage spring) mattresses. Today’s quality mattress construction with honeycomb pocket springs works better on solid platform beds or ensemble bases with non-flexible slats. Mattress store recommendations have changed Most mattress store staff will now recommend ensemble bases or platform beds rather than old-style box springs. The perfect mattress needs proper support underneath.

Nov 11, 2025

Bed in a Box Pros and Cons: When It Makes Sense (and When It Doesn’t)

KARL'S QUICK OPINION: Bed-in-a-box mattresses aren’t evil—they’re convenient and work brilliantly for younger, lighter people (under 75kg and 30 years old) who sleep on their back or stomach. But if you’re over 80kg, sleep on your side, struggle with sleep already, or run hot at night, you’re gambling. The fundamental problem: you can’t test it first, and most use foam that sags within 3-5 years. If sleep matters to you—if you’re reading this at 2 am because your back hurts—you need to test before you buy. The mattress must “feel good when you are laying on it.” That’s priority one.

Rolled-up mattress in a cardboard box, representing a typical “bed-in-a-box” mattress delivery

Let me be upfront: I make mattresses, but I don’t make bed-in-a-box mattresses. Not because I’m against them, but because I haven’t found a way to compress a mattress while preserving the features I believe matter most for sleep—specifically, the wire edge support that keeps the mattress breathable and prevents mould.

So take what I say with that in mind. But I’ve talked to hundreds of customers who’ve tried bed-in-a-box mattresses, I’ve seen what works and what doesn’t, and I’ve helped people who were at their wits’ end after multiple bed-in-a-box purchases. Here’s what I’ve learned.

Bed in a Box Pros and Cons

The Real Pros

Convenience is genuinely brilliant. You order online, it shows up at your door, you drag it upstairs yourself. No waiting around for delivery windows. No coordinating with anyone. For young professionals in apartments, this is genuinely valuable. A mattress shows up at your door, you don’t need to talk to anyone, and you can set it up yourself.

The price point attracts people. Most bed-in-a-box options sit in the $600-$1,000 range for a queen, which is genuinely more accessible than many retail options. That’s not nothing, especially when you’re starting out.

The 100-day trial sounds reassuring. Most companies offer this, usually 100+ nights. It gives you peace of mind—at least in theory. It reduces the risk of buying something you haven’t tested.

No showroom pressure. You’re not dealing with salespeople. You research, read reviews, order. Some people prefer this simplicity.

Simplicity works for some. If you’re under 75kg, sleep on your back or stomach, and prefer a firmer mattress without much give, there’s a decent chance a bed-in-a-box will work fine for you. The younger you are (say, under 30), the more forgiving your body is, and the less critical precise fit becomes.

The Real Cons

Here’s what actually matters when you’re trying to get a good night’s sleep.

The Main Problem: You Can’t Test It

Look, here’s the thing about mattresses: it MUST “feel good when you are laying on it.” That’s priority number one. Not the marketing claims. Not the price. Not the latest cooling gel technology. Does it feel good when you close your eyes and lie on it?

When you buy a bed in a box, you’re forgoing this entirely. You’re turning off the lights, skulling a bottle of vodka, grabbing a dart, and hoping for a bullseye. Sure, you might hit it. But if you don’t, you’ve just sent a huge chunk of plastic and wire to the dump.

As one customer who found us after trying bed-in-a-box said: “I’ve used many bed-in-a-box mattresses over the last several years and every single one dips in the middle after only a few months.”

Another wrote: “At first I turned my attention to the latest hype in beds, Koala, Ecossa, Emma and Sleeping Duck… But the more I digged around, there appeared to be a common theme among these cheaper yet popular brands, that is sagging and heat.”

Durability Concerns

I’ve opened hundreds of old mattresses. You know what I’ve found? Pristine springs and dead foam. Every single time.

Plastic-based foams (polyfoam and memory foam) compress and lose resilience over time. How fast depends on:

Foam density – Higher density lasts longer, but costs more
Your body weight – Heavier people compress foam more, wearing it out faster
Spring tension mismatch – If the springs are too soft for your weight, the foam gets crushed between you and the springs

Here’s my rough experience with foam lifespan (for a 90kg person on 8cm of foam):

Low-density polyfoam: 1 year
Medium-density polyfoam: 4 years
High-density polyfoam: 7 years max
Memory foam: 3-6 years depending on density

Natural latex (the real stuff, not the fake 50/50 latex-polyfoam blend) is the only foam I haven’t seen dip. It lasts 3-4 times longer than polyfoam.

Most bed-in-a-box brands use medium-density foam to hit their price point. That’s fine if you understand you’re buying a 3-5 year mattress, not a 10-year one. One customer who researched extensively told us: “I’d originally been looking at the Koala mattress and other similar mattress-in-a-box style products, but I was ultimately put off by several reviews that complained of a similar problem (sagging after a year or so).”

Heat Retention

Here’s what actually determines how hot you sleep: foam volume. That’s it. More foam = more heat storage. Your body generates heat, and foam traps it.

Think of it like frying pans—a thin pan heats and cools quickly because there’s less metal to store heat. A thick pan stays hot longer. Same principle as mattresses. A spring mattress with 2cm of foam has 15 times less heat-trapping capacity than a 30cm all-foam mattress.

Most bed-in-a-box mattresses are either:

All foam (25-30cm thick) = maximum heat retention
Hybrids with 10-15cm of foam on springs = moderate heat retention

Memory foam is particularly dense (50-85 kg/m³ compared to air at 1.2 kg/m³), making it about 40-70 times more efficient at storing heat than air. That’s why so many people complain about sleeping hot on memory foam—it’s not a defect, it’s the material doing what dense foam does.

The “cooling gel” or “graphite-infused” marketing doesn’t change the fundamental issue. Want a cooler mattress? You need less foam. But less foam means you feel the springs more, which brings us to the comfort trade-off most people aren’t ready for.

One customer mentioned: “We really wanted to love this mattress as the price was good and so was the service… but it gets so hot it feels like we have an electric blanket on… during the heat waves, forget it…we’d wake up soaked.”

The Edge Support Trade-Off

Most bed-in-a-box mattresses use foam edge support instead of wire edges. Why? Because you can compress foam. You can’t compress wire.

The problem: foam edge support creates a “foam box” around the springs that doesn’t breathe. When I used foam boxes years ago, I started seeing mould under mattresses. Once I switched to wire edges—coils all the way to the perimeter—I never saw mould again. The wire allows air circulation right to the edges.

This isn’t just theoretical. It affects breathability and longevity.

The 100-Day Trial Isn’t Always Simple

Yes, they offer trials. But:

You have to initiate the return before the deadline
Some charge restocking fees
You arrange pickup or disposal
One customer warned: “If you have the same issue, act on it fast! Do not make the same mistake we did” (they waited too long)

And even if returns are easy, you’re back to square one: buying another mattress you can’t test. Returns end up in landfill. Buying a mattress online without being able to test it creates waste if you get it wrong.

Bed-in-a-Box Not Your Thing?

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When Bed in a Box Is OK

You’re probably safe if you tick these boxes:

Under 75kg body weight – Less pressure = slower foam degradation
Back or stomach sleeper – These mattresses are typically made firm for these positions
Under 30 years old – Younger connective tissue is more forgiving
Not fussy about comfort – The “I can sleep on anything” type
Don’t sleep hot – Or you’re willing to accept the heat-comfort trade-off

If you’re buying for a spare room: A bed-in-a-box for occasional guest use is reasonable. The convenience might outweigh the compromises.

If you live remotely with no showrooms nearby: Sometimes bed-in-a-box is your only practical option. In that case, research thoroughly, read real customer reviews (not marketing), and use that trial period actively.

If you’re renting short-term: Planning to move in 6-12 months? The portability might be worth it.

When You Should Avoid Bed in a Box

Skip it if:

Over 80kg and sleep on your side – You need personalized spring tension to avoid pressure points on hips and shoulders. One-firmness-fits-all won’t cut it. Heavier people compress foam faster, leading to sagging within months.
You’re struggling already – If you’re reading mattress forums at 2am, you’re not in the “can sleep on anything” category. You need to test mattresses in person. As one customer who made the switch said: “Never going back to a box bed again as you can’t try them out physically, and for something you use for 1/3 of your life, you really should test it in person first.”
You sleep hot – All-foam designs will make this worse, and there’s no real fix except reducing foam volume (which isn’t adjustable in a bed-in-a-box).
You’re over 40 – As we age, precise fit becomes more important. Your body needs more help maintaining alignment. The younger you are, the more you can get away with imperfect fit. As we age, it becomes more important to get a mattress that “feels good when you are laying on it.”
You’ve already tried 2+ mattresses and hated them – Buying another mattress you can’t test is probably going to end badly. As another customer reflected: “After a long journey of poor mattresses… We also tried a few ‘mattress-in-a-box’ options which didn’t last either.”

The One-Size Problem

Here’s the fundamental issue: bed-in-a-box companies make one spring tension (or no springs at all). But a 50kg person will find most mattresses too firm, while a 120kg person will find the same mattress too soft. They sink to completely different depths.

It’s like buying suspension for your car without knowing if you’re driving a sedan or a pickup truck. The suspension quality doesn’t matter if the tension is wrong for the vehicle weight.

That’s why companies that match spring tension to body weight exist—because spring tension to bodyweight is about 60% of getting a mattress right. Bed-in-a-box can’t do this at scale (more variations = more inventory headaches).

The Bottom Line: Good Night’s Sleep or Convenience?

Bed-in-a-box isn’t evil, and it’s not a scam. It’s a logistics solution that works well for a specific segment (younger, lighter, less fussy sleepers) and poorly for everyone else.

The real question: What do you value most for a good night’s sleep?

Priority 1: Does it feel good when you’re laying on it?

Priority 2: Will it feel good for a really long time?

If convenience and price are more important to you than those two priorities, bed-in-a-box might work.

But if your sleep matters—if you wake up with back pain, if you’re tossing and turning, if you’re exhausted—then you need to test before you buy. Go somewhere that makes mattresses. Lie on them for 15 minutes. Close your eyes. Feel the damn thing.

If you’re in the safe segment for bed-in-a-box (young, light, healthy), great—save yourself the hassle and order online. If you’re not, you’re gambling with your sleep quality and probably wasting money on returns. Find someone who makes mattresses, tell them your body weight, and lie down on a few options. It’s boring advice, but it works.

What About Ausbeds?

Full disclosure: We don’t make bed-in-a-box mattresses. I’ve tried, but I can’t figure out how to compress them without losing the wire edge support I believe prevents mould and maintains breathability.

What we do instead:

Showroom in Marrickville where you can test every firmness level
3-9 month trial period (not 100 days)
Two FREE component swaps in the first 3 months
We come to your house and adjust the mattress if it’s not right
Modular design means you can change firmness later without buying a new mattress

Is this more effort than clicking “buy now”? Yes. Does it cost more upfront? Sometimes (though our Cooper starts at $850 for a single, $1,500 for a queen).

But here’s what we can’t do: We can’t ship to you in a box. If you live interstate, we deliver on corridor runs (Brisbane/Melbourne/Canberra) or you arrange freight.

Contact us if you want to try before you buy: (02) 8999 3333 | sales@ausbeds.com.au | Showroom: Marrickville, Sydney

Karl
Ausbeds

This article reflects my experience making mattresses since 2012 and talking to thousands of customers. Your experience might differ. Do your own research, read real customer reviews, and make the choice that’s right for you.

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