Best bed in a box mattress 2025: find the most convenient sleep upgrade around

Choosing the best bed in a box mattress is the most convenient way to improve your sleep set-up. Buying a new mattress used to mean going out and testing all the options in a big out-of-town store, but these days, you can simply order online and get it vacuum-packed, rolled, and delivered directly to your door, in one easy-to-move box.

In this guide, we'll show our top picks for the best bed in a box mattress, how to choose the one for your needs and useful tips on how to shop for one. It's important to note that most brands will deliver for free and give you a trial period of 90 days or more, with the option to return your mattress if it's not the best fit for you.

Need to see all the options? Plenty of the models in our best mattress and our best memory foam mattress guides qualify as a bed in a box, but this is where you want to be if you absolutely want a boxed option. As with all things mattress-related, it's a competitive market in which you should never have to pay full price; our roundup of the best cheap mattress deals can help you ensure that you don't pay over the odds.

Without further ado, here are the best bed in a box mattresses you can buy today for convenient delivery and unrivalled comfort.

T3's Top 3

WRITTEN BY

WRITTEN BY

Bethan Girdler-Maslen

Beth is Home Editor for T3, covering style, living and wellness. As a sleep expert, Beth is in the know about all the latest mattress launches, and sleep hacks. She's tried a few of the bed in a box mattresses in this guide, so you can trust her advice.

Best bed in a box mattresses 2025 ranking

The best bed in a box mattress overall

An upgraded version of the Emma Premium, the Emma Hybrid Premium is the best bed in a box mattress for many reasons, including price, comfort, support and temperature control. Previously, Emma mattresses had an issue with heat regulation, but the brand has since had a huge overhaul.

A perfect example of this is the Emma Hybrid Premium mattress which has excellent temperature control, which keeps you cool throughout the night even with its thick cover. The Emma Hybrid Premium mattress has a firmer level of support and comfort, which might be too firm for some people but will suit most sleep positions. The hybrid combination of memory foam and springs moulds to the body but doesn't give a sinking or uncomfortable feeling.

Read our full Emma Hybrid Premium mattress review for more details. See how the Emma compares to competitors' products in our Emma vs Casper and OTTY vs Emma articles.

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The best hybrid bed in a box mattress

Our absolute favourite hybrid mattress at the moment is the Simba Hybrid Pro – the proud winner of a 2021 and 2022 T3 Award in the mattress category. This luxurious model offers a winning combination of foams and spring layers. Despite being a luxurious 28cm thick, it still packs down into one neat box that's easy enough to move around. A softer top layer provides dreamy comfort and pressure relief on your joints, while firmer lower layers offer security and support. We were especially impressed by the temperature regulation on offer, as well as the movement isolation.

It's not cheap, but there are regular Simba discount codes and deals that mean you shouldn't have to pay sticker price. Head to our five-star Simba Hybrid Pro review to find out more. See how it compares to another luxury hybrid bed in a box in our Simba Hybrid Pro vs Eve Premium Hybrid article.

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The best budget bed in a box mattress

After briefly going into administration in 2023, Eve Sleep made a huge comeback with its Wunderflip series. If you've ever wanted to change the firmness of your mattress, the Eve Wunderflip Premium Hybrid actually allows you to. By simply flipping it over, you can turn your mattress from soft to firm and back again.

Made from quality foam, the Eve Wunderflip Premium Hybrid mattress has a slight sinking feeling and is great for side sleepers. It's pretty temperature neutral, so there's not too much overheating, and the edge support has improved from Eve's older mattresses... and it comes in a box!

Read our full Eve Wunderflip Premium Hybrid mattress review for more details, and you can save money on your order with these Eve deals discount codes.

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The best bed in a box mattress for back sleepers

Next up in our ranking of the best bed in a box options is the Nectar. This medium-to-firm boxed mattress boasts three layers of memory foam below the outer cooling cover, with different zoned areas to target particular trouble areas. As it’s firmer than some we tried, we felt it was more suited to front and back sleepers who require more spinal support, but probably isn't the best mattress for side sleepers. As with some of the other bed in a box mattresses we tried, there was a faint, lingering odour initially, but it wasn’t noticeable by day two and certainly didn’t trouble our sleep. Read more in our Nectar memory foam mattress review.

Nectar is so confident you're going to like it, you get an entire year to decide whether it’s right for you. The company is also climate neutral, offsetting all emissions by various global schemes, including an Amazon forest protection programme. Head to our Nectar mattress deals and discount codes page for the best current price-drops in the UK and the US.

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The best eco-friendly bed in a box mattress

OTTY's Pure bed in a box mattress range makes use of some pioneering materials: rather than regular memory foam, there's a foam made from bamboo infused with charcoal. These materials claim to offer a whole range of properties that make them a good choice for a mattress – they're temperature regulating, anti-fungal and antibacterial, hypoallergenic, and sustainable too.

In reality, to lie on, it just feels like a really good hybrid mattress. The layer of generous 16cm springs add bounce and promote airflow, while the foams feel superbly supportive all over. OTTY rates this a 6.5 on the firmness scale, but we think it's firmer than that (we'd say 7.5). The surface feels plush and soft when you press on it with your hand, and while you'll also sink in very slightly, overall this is a mattress you sleep 'on' rather than 'in'.

Head to our OTTY Pure mattress review to find out more, and check our OTTY discount codes and deals page for the best current prices.

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The best luxury bed in a box mattress

You might think that 'luxury' and 'bed in a box' are two words that don't go together. But this high-end hybrid mattress really does deliver a luxury experience. It's constructed from five layers that work together well for a comfortable and supportive night's sleep. This begins with a top cover made of quilted foam and cashmere, followed by two thin layers of gel memory foam and poly foam respectively, an innerspring layer made of individually wrapped coils, and finally a poly foam base layer. Plus whichever size of mattress you opt for, each is 14 inches deep, which really helps to deliver a 'cradled' feel when sleeping on it.

In use, our reviews found it kept cool during hot nights, felt supportive whether back- or side-sleeping, and was generally low on motion transfer. All of this doesn't come cheap, but neither is it super-expensive – and there are fairly regular offers to take the price down (check out the current DreamCloud deals to start with). Plus it comes with a generous one-year trial and a lifetime guarantee against damage from normal use, which shows just how much confidence DreamCloud has in this premium quality mattress. For more info, head to our DreamCloud mattress review.

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The best cooling bed in a box mattress

One of the pioneers of the bed in a box mattress, Leesa has now ceased operations in the UK, but for those on the other side of the Atlantic, its Original Mattress offers a lovely mixture of softness and support. Constructed from three layers proprietary foam, memory foam, and high-density poly foam, with a thick polyester cover, this medium firm mattress never gives you that sinking feeling that have historically plagued memory foam products. And our reviewers found the cooling layer at the top really did make a difference to guarding against overheating. For a mattress, it boasts a pretty stylish design too. The only real downside we can point to is that it's not the thickest and can smell a little for the first week or so (head to our Leesa mattress review for more info).

Overall, there's nothing revolutionary about this bed in a box mattress. But it is solidly constructed and gives a good sleeping experience, so what more could you really ask for? And the best news is that you can knock the price down with a Leesa mattress discount code or deal.

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How to choose the best bed in a box mattress

When it comes to choosing the best bed in a box mattress, you should really focus on the mattress itself over the delivery convenience. Most of the best mattresses you can find on the market today come rolled up and in a box, so if that delivery aspect is important to you, you can rest assured that you still get a good quality mattress.

One thing to consider is whether you want memory foam or springs or even a hybrid option which combines both materials. Once you've narrowed that down, sizing, prices and eco-friendly credentials are also worth considering.

If you're unsure about sizing, our mattress size guide will help you.

How we test the best bed in a box mattresses

We test the best bed in a box mattresses by sleeping on them for at least a month. When possible, we update our reviews after a few more months testing, with thoughts on performance and durability.

During testing, we focus on the design, like how well the mattress is made, materials, and extra features like zip-off covers and handles.

Next is comfort so we look at what it's like to sleep on in different positions. We check if it feels comfortable and supportive in certain parts of the body, like neck, hips and spine, and if its firm, soft or a happy middle

Other features we look at is temperature control, edge support and motion transfer. As it's a bed in a box mattress, we judge how heavy the box was to move, how quickly the mattress expanded to its true size, and if there was any chemical smells.

Finally, we consider any extras offered by the company like guarantees, trials and how smooth the delivery was.

For more details, read how we test at T3.

FAQs

What is a bed in a box mattress? 

A bed in a box is a vacuumed-packed mattress that you order online – yes, despite the name, it's not actually a full bed, but just the mattress. It arrives at your door rolled up in a small, conveniently sized box (or sometimes just a heavy-duty plastic bag), and expands back into its original shape once opened.

While many mattress in a box options are made from memory foam, it's also suitable for mattresses that include springs – and indeed, there are some hybrid models in our ranking. If you're still deciding between the two, our spring vs memory foam mattress guide can help you make your mind up.

Once it’s unfurled, your bed in a box might take some time to fill out to its full depth – some manufacturers advise up to 72 hours; others say just four. It's also worth being aware that some memory foam gives off a slightly chemical odour when the package is first opened. There doesn't seem to be a way to predict if this will affect you and your particular mattress (it's not even consistent for different samples of the same mattress model), but if you do experience that, rest assured it should dissipate within a few days.

Why should I buy a bed in a box mattress?

Bed in a box mattresses tend to be designed for every type of sleeper, but they're an especially good choice for allergy sufferers. They're also helpful for people who suffer from back or joint pain, because when it’s warm, the mattress moulds to your body, relieving pressure on joints. If you have regular back pain, we have a guide to the best mattress for back pain for more tailored options.

Bed in a box mattresses are often cheaper, because you're cutting out all the expense of operating mattress showrooms. You might miss being able to try about a mattress in store, but is that really such a bad thing? Trying out a mattress in a matter of minutes, under pressure from a salesperson, isn't the most reliable way of deciding whether it's right for you. In contrast, most bed in a box mattresses give you between 90 days and a whole year to test whether it's right for you, and let you return it if it isn't.

How do I set up a bed in a box mattress?

Once your bed in a box mattress arrives, move it to your bedroom of choice (ideally, ask the delivery person, your partner or friend to help you with this. Once you take it out of the box, put the plastic wrapped mattress onto your bed frame before opening it.

Using the cutting tools the brand provided with the delivery (or a pair of scissors if you don't have these), cut into the plastic, making sure not to cut or tear the mattress itself. As you do this, the mattress will unfurl. Remove all the plastic and let the mattress expand within the bed frame. Leave it to inflate fully for at least 24 hours before sleeping on it.

For more details, see the 6 mistakes everyone makes with bed in a box mattresses.

Reviewer panel

Bethan Girdler-Maslen

Bethan Girdler-Maslen has covered sleep and wellness on T3 for years. She's tested many of the bed in a box mattresses in this guide and outside of it, including our top pick, the Emma Hybrid Premium.

Ruth Hamilton

Ruth Hamilton was previously Wellness and Outdoor Editor at T3, and Sleep Editor at TechRadar before moving to the role of Homes Editor. She's tested many bed in a box mattresses, including models from OTTY.

Matthew Bolton

Matthew is T3's former AV and Smart Home Editor (UK). He's tested many different products, including bed in a box mattresses from Simba.

Jim McCauley

Jim is a freelance writer and previously worked as Sleep Editor on TechRadar. They have tested many bed in a box mattresses and beyond, including option from Eve.