Best mattress UK 2020: Memory foam, pocket sprung and hybrid mattresses to deliver a dreamy night's sleep

We help you find the best mattress at the best price – on Cyber Monday and beyond

best mattress
(Image credit: Future)

Looking for the best mattress 2020? We've tried and tested all the leading options, from trendy new brands as well as reliable old favourites, to put together this definitive ranking. Whether you want a memory foam mattress, pocket sprung, or a clever hybrid, we've found the best mattress to deliver an excellent night's sleep. 

This guide is here to help you make sense of all the different options, and find your perfect mattress, no matter your budget or sleeping style. Almost all of our best mattress picks have generous trial periods but we've also personally tested each of them out to make sure they deliver on their promises.

What's the best mattress UK? 

Right now, the best mattress is the Emma original. This memory foam mattress is outrageously comfortable, supportive, and excellent value to boot (and even cheaper right now with 36% off using the code T36). It's highly durable too – so it’ll last. If you have a little more to spend, we'd urge you to check out the Eve Premium Hybrid. Second in our list, this mattress is exceptionally supportive and comfortable. In fact, the only real down-side is that it's more expensive than the Emma – if you spot a deal, we'd definitely recommend you get on it! 

However, the right mattress for you will depend on your personal preferences and budget. Our widgets will show you the best prices for our best mattress picks. If you've been on the fence about buying, now is the very best time to take the plunge: there are excellent Black Friday and Cyber Monday mattress deals almost everywhere, but you'll need to be quick if you want to make the most of the best discounts: chances are, they won't stick around past 30 November.

Best mattress 2020 ranking

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best mattress: Emma Original

(Image credit: Emma)
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best mattress: Emma

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best mattress: Emma

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best mattress: Emma

(Image credit: Emma)

1. Emma Original mattress

The best mattress you can buy right now

Specifications
Best for: All sleepers
Sizes: UK, 5 (single-super king); EU, 3 (single-king); US, 6 (twin-king)
Depth: 25cm
Turn: No
Filling: Memory foam
Comfort: Medium-firm
Trial: 200 nights
Guarantee: 10 years
RRP: Single: £429, Double: £649, King: £699, Super king: £799
Reasons to buy
+Exceptionally comfy and loads of awards+Handles for rotating+Removable and machine washable cover+Incredible value
Reasons to avoid
-Not the cheapest at full price (but still beats the competition)

The Emma Original mattress is absolutely incredible. Comfortable, supportive in all the right places and amazing value, it earned a full five stars in our Emma mattress review. It's T3's Best Mattress 2020, having already triumphed in the 2019 Awards. The Emma Original consists of three layers of foam (a top layer of 25mm of Airgocell foam to relieve pressure and aid ventilation; 20mm of visco-elastic memory foam for pressure relief and support; and a firm 195mm HRX foam foundation), this medium-firm mattress is suitable for every type of sleeper. We love it, and so do thousands of users: it boasts an excellent 4.3 out of 5 stars from over 9,000 reviews on consumer review site Trustpilot.

The Emma Original also comes with some thoughtful extras. The cover features a temperature-regulating top and a breathable non-slip bottom as well as handles for rotating (you don't have to flip it), and it's removable and machine-washable. At full price it's around the cheaper end of the mid-range market, but there's usually a decent discount to be found, helping the Emma Original mattress completely undercut the competition. It's outrageous value for money. 

Like many of the mattresses in this guide, the Emma Original is a bed-in-a-box mattress, so you buy it online and it arrives at your door, vacuum-packed in a conveniently sized box. It takes just two hours to expand into shape. Add together the luxurious comfort, competitive price and its incredible review results, and there are some very compelling reasons to choose the Emma Original. We think it's the best mattress you can buy. Plus, the 100-day, love-it-or-return-it trial and healthy 10-year guarantee help take the pain out of decision-making. 

If you like the sound of the Emma Original but would prefer a hybrid mattress, check out our Emma Hybrid review. And be sure to explore our guide to the best Emma mattress Black Friday deals

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best mattress: Eve Premium Hybrid

(Image credit: Eve)
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best mattress: Eve

(Image credit: Eve Sleep)
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best mattress: Eve

(Image credit: Eve Sleep)
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best mattress: Eve

(Image credit: Eve Sleep)

2. Eve Premium Hybrid

The best premium mattress around

Specifications
Best for: Everyone
Sizes: UK - 3 (double - super king)
Filling: springs, foam, memory foam
Depth: 28cm
Turn: no
Comfort: medium-firm
Trial: 200 nights
Guarantee: 10 years
RRP: Single: N/A, Double: £899, King: £1,049, Super king: £1,199
Reasons to buy
+Excellent quality+Exceptionally supportive and comfortable+No motion transfer +Not too hot
Reasons to avoid
-At full price, pricier than the Emma 

Another five-star mattress for your consideration, the Eve Premium Hybrid received a Highly Commended mention in the T3 Awards 2020. Like the Emma Original, this is a bed-in-a-box mattress that's incredibly supportive and extremely comfortable to sleep on, however there are important differences between the two mattresses. As the name suggests, the Eve Premium Hybrid is a hybrid that combines five layers of soothing foam with 1,500 full-sized pocket springs for a more breathable mattress with extra support and pressure relief. We found it firmer and slightly cooler to sleep on than the all-foam Emma Original.

At 28cm deep (don’t worry, standard sheets still fit) the Eve Premium Hybrid feels a little more luxurious too. And while the Eve Premium Hybrid definitely has the edge on the Emma Original in terms of features, this changes once you bring price into consideration. A double Eve mattress costs £400 more than the Emma, while a king size Eve is £470 more expensive – that’s quite a difference. 

If you have the budget and value all the extra features – the more so if you tend to overheat at night – the Eve Premium Hybrid is a fine choice. It’s just that the superb Emma Original is cheaper – which is why the Eve Premium Hybrid just misses out on the best mattress UK crown. And if you can't quite stretch to the Premium Hybrid, heck out our Eve Original mattress review for Eve's cheaper option, as well as our Eve mattress Black Friday guide

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3. Nectar Memory Foam mattress

Our third best mattress offers excellent cooling tech and a super-long trial

Specifications
Best for: Most sleepers
Sizes: Single - super king
Depth: 25cm
Turn: No
Filling: foam/memory foam
Comfort: medium/firm
Trial: 365 nights
Guarantee: Forever
RRP: Single: £599, Double: £699, King: £799, Super king: £899
Reasons to buy
+365 day trial period+'Forever' warranty+Super supportive
Reasons to avoid
-Too firm for some

100-night trials are pretty common among the established challenger mattress brands, but Nectar goes the extra mile with not only a 365-night trial, giving you a whole year to make your mind up, but also a lifetime warranty for your new mattress. Nectar's also a climate-neutral company that offsets its emissions through various global schemes, including an Amazon forest protection programme.

The Nectar mattress feels comfortable from the minute it comes out of its minimal packaging, and offers a medium-to-firm support level that suits any type of bed and all kinds of sleepers. There's a bit of give in the top layer, which neatly moulds around the body, while a complex supporting base layer adds the required firmness for a peaceful sleep. The adaptive cooling cover top layer is supposed to draw heat away from the body, and while we're not sure it actually does this, it certainly feels cooler than many memory foam options.

Delivery is just as impressive. Amazingly, even the enormous Nectar Super King model comes packaged in a very manageable box. We experienced some off-gassing when our review sample was first delivered, but this soon settled down. The Nectar is a great and comfortable mattress, and the 365-day money-back trial proves just how confident this company is that it has created one of the best mattresses you can buy. We recommend buying straight from Nectar, which promises 'the best available price' at all times (you might even be able to snap up a Nectar mattress Black Friday discount).

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best mattress UK 2020: Otty Hybrid mattress

(Image credit: OTTY)
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best mattress UK 2020: Otty Hybrid mattress

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best mattress UK 2020: Otty Hybrid mattress

(Image credit: OTTY)

4. Otty Hybrid mattress

The best-value hybrid mattress you can get

Specifications
Sizes: Single - emperor; EU sizes
Depth: 25cm
Turn: No
Filling: springs, memory foam, reflex foam
Comfort: medium-firm
Trial: 100 nights
Guarantee: 10 years
RRP: Single: £374.99, Double: £549.99, King: £649.99, Super king: £749.99
Reasons to buy
+Feels like a luxury mattress+Brilliant price+Loads of awards+Minimal motion transfer 
Reasons to avoid
-Might be too firm for some (we love it though)

With three layers of foam combined with 2,000 pocket springs for maximum comfort and pressure relief, the Otty Hybrid mattress is an impressive offering. At a generous 140mm in length, the Otty’s pocket springs are its standout feature and much more substantial than those in the Simba Hybrid (25mm) below.

The other standout feature is its price: at RRP, the Otty is cheaper than most hybrid options in our best mattresses guide, with a double and king-sized Otty mattress coming in at £599.99 and £699.99 respectively, versus £749 and £849 for the Simba Hybrid. Once you take into account the fact that you can almost always find a welcome discount, the Otty Hybrid looks like a great option if you're looking for a hybrid on a budget. And bear in mind that Otty price-matches its competitors too: if you do find a cheaper comparable mattress, it'll match the price. 

We tested the OTTY Hybrid mattress for a few months and liked it a lot. It feels like a luxury mattress, with its body-moulding reflex and memory foam layers, and supportive springs. It isn't just us who like it either – it’s the only boxed mattress company so far to be awarded with a prestigious NBF (National Bed Federation) Award. 

Thanks to those pocket springs the Otty is slightly on the firmer side of medium , so if you’d prefer a softer, fully pocket-sprung mattress, we’d recommend the Sealy Nostromo further down our best mattress guide. But if medium to medium-firm is what you like – and you want a touch of luxury for a budget price – we think the Otty is the best-value hybrid mattress right now (and an OTTY Black Friday deal might make things even cheaper). Check out our OTTY Hybrid review for more details, or explore how it compares to Simba's efforts in our Otty Hybrid vs Simba Hybrid showdown.

Best mattress: Sealy 1400 Nostromo

5. Sealy 1400 Nostromo / Pocket Teramo 1400

The best pocket sprung mattresses, bar none

Specifications
Best for: Side and back sleepers; allergies
Sizes: Single - super king
Depth: 30cm
Turn: No
Filling: pocket spring/latex
Comfort: medium
Guarantee: 5 years
RRP: Single: £920.40, Double: £1,216.80, King, £1,372.80, Super king: £1653.60
Reasons to buy
+Fantastic support and comfort+Great for allergy sufferers+Cool even in summer+Very durable
Reasons to avoid
-Not the best for heavier people

If you haven't really been paying attention to the world of mattresses and all these brands are new to you, here's a name that feels reassuringly familiar. Sealy's been around for a long time, and as an old-school manufacturer it knows how to do pocket springs, as the Sealy Nostromo – also known as the Pocket Teramo 1400 – amply demonstrates. It's an outstanding pocket sprung mattress, with seven zones, 1,400 pocket springs, tencel fibres, a latex comfort layer and a luxurious 29cm depth. It’s also a lot more durable than most other mattresses, and it’s both hypoallergenic and pleasantly cool, even in hot weather. 

Suitable for all sleepers – back and side sleepers in particular – this mattress works well with most body types, although if you’re a taller or heavier-than-average back sleeper you might prefer the Eve Original mattress above, which gives exceptional back support. Which? magazine made it a best buy, it's been awarded Allergy UK's seal of approval, and there’s a five-year warranty for peace of mind. You can generally find it on Amazon with a decent discount on the RRP too (although right now Mattress Online has slashed the price in half) so it’s worth buying online rather than in a shop. 

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6. Simba Hybrid mattress

An advanced and comfortable hybrid with a dedicated cooling layer

Specifications
Best for: Most sleepers
Sizes: Small single - emperor
Depth: 25cm
Turn: No
Filling: pocket springs, memory foam
Comfort: all
Trial: 200 nights
Guarantee: 10 years
RRP: Single: £549, Double: £749, King: £849, Super king: £949
Reasons to buy
+Very comfortable+Extremely supportive+100-day trial
Reasons to avoid
-No handles to rotate mattress

Most modern mattress brands go big on their sleep technology, but Simba's claim that its Hybrid mattress is the most advanced in the world seems to carry some weight. The Simba Hybrid consists of five layers, including a unique layer of up to 2,500 of Simba's patented conical pocket springs, foam, responsive memory foam, a 'Simbatex' cooling layer to reduce overheating, and a hypoallergenic outer cover. It's been designed to deliver a great night’s sleep, regardless of your body type or sleeping style. 

The springs pivot in their pockets to adapt to your body shape while you sleep, giving you full body support and making the Hybrid particularly good for side sleepers. They also reduce motion transfer between sleepers, so you won’t notice your partner tossing and turning in the night. Don’t expect the Simba Hybrid to have that pocket-sprung bounce, though. It may have thousands of springs, but at 25mm they’re much smaller than those you’d find in other pocket sprung or hybrid mattresses.  

Simba doesn't rate its mattresses by firmness; instead it calls the Hybrid 'perfect' and says it suits every kind of sleeper. For the record, though, we found it to be medium when we tested it. Thousands of online reviewers have testified that this is one of the best mattresses you can buy, with the only real quibble being the lack of handles for rotating the mattress. 

Simba provides a 100-day no-quibble trial, so if you don’t like it, you can return it within that time for a full refund. If you're looking for a hybrid mattress, the Simba mattress is an excellent choice for most people. Check out our Simba Hybrid mattress review and our Simba Black Friday deals page for more info and buying advice.

best mattress: Brook + Wilde Lux

(Image credit: Brook + Wilde)

7. Brook + Wilde Lux

This deluxe hybrid is super-pricey but super-comfortable too

Specifications
Best for: Back support
Sizes: Single, Double, King ,Super King
Depth: 28cm
Turn: No
Filling: Pocket springs, memory foam
Comfort: Choose soft, medium or firm
Trial: 100 nights
Guarantee: 10 years
RRP: Single: £499, Double: £699, King: £799, Super king: £899
Reasons to buy
+Design encourages back support and spinal alignment+Three firmness levels to choose from
Reasons to avoid
-Cover not removable-Only 4 sizes available

If you like a lot of layers in your mattress then get a load of the Lux from British brand, Brook + Wilde. Positioned at the more premium end of the market, it boasts five different layers to give you incredible night-time support. Not only do you get three layers of memory and support foam, there are also two layers of pocket springs: an upper layer of 2,000 mini springs, and a lower layer consisting of 1,000 135mm springs to give your mattress a bit of welcome bounce.

This mattress is engineered to move in tandem with your body as you shift about, keeping your spine aligned, supporting your shoulders and hips, and reducing pressure points. You can also pick your firmness – soft, medium or firm – to suit your preferences. And with the 100-night trial, if you find you've chosen poorly you can swap your mattress for one of the other two levels, free of charge (or go for a full refund if you prefer). We tested the medium option, and found it provided an excellent, extremely supportive night's sleep (for more information, read the full Brook + Wilde Lux mattress review).

The Lux comes rolled and vacuum-packed, and Brook + Wilde will install it in a room of your choice (there are precautions currently in place, check the website for details). Our recommendation? Keep an eye out for a Brook + Wilde discount code or deal and if you find one, snap it up sharpish.

Best mattress: Silentnight Eco Comfort Pocket 1200

8. Silentnight Eco Comfort Pocket 1200

A cheaper pocket sprung mattress

Specifications
Best for: Most sleepers
Sizes: Single - super king
Depth: 29cm
Turn: Yes
Filling: Pocket springs
Comfort: medium/firm
Trial: 60 nights
Guarantee: 5 years
RRP: Single: £369, Double: £489, King: £569
Reasons to buy
+Good all-rounder+Different comfort zones+Very supportive
Reasons to avoid
-Requires turning-On the firm side of medium

Silentnight's Eco Comfort Pocket 1200 is a cheaper pocket sprung mattress than the Sealy 1400 Nostromo, and one with a smart solution to the whole firmness problem. Rather than deliver the same firmness across the whole mattress, it’s designed with different zones to ensure that the lumbar area of your back gets more support than your shoulders. 

That makes it particularly good for anyone whose back needs something firm but who’d rather not wake up with pins and needles everywhere else, and it also means your partner’s movements won’t impact your side of the bed. There are 1,200 pocket springs and a hypo-allergenic cover, and the 29cm depth is pretty luxurious for a mattress in this price range. There’s a five-year warranty but remember to turn it frequently: pocket sprung mattresses need regular turning to keep their shape.

best mattress: REM-Fit 500 Ortho

(Image credit: REM-Fit)

9. REM-Fit 500 Ortho mattress

The best orthopaedic mattress for back and joint pain

Specifications
Best for: back and joint pain; couples
Sizes: Single - super king
Depth: 25cm
Flip: No
Filling: pocket spring/foam
Comfort: firm
Guarantee: 15 years
RRP: Single: £649, Double: £799, King, £849, Super king: £949
Reasons to buy
+ Orthopaedic support + Comfortable cushioning + Good temperature regulation 
Reasons to avoid
- May be too firm for some 

If you tend to wake up with back and joint pain, the REM-Fit 500 Ortho Mattress is a premium orthopaedic mattress you're looking for. It’s a hybrid mattress with 2,000 orthopaedic pocket springs combined with five layers of cushioning, supportive foam, and it's seriously firm. We rated it an 8 out of 10 for firmness (with 10 being the firmest). As one of the firmer mattresses in this guide, it took us a few nights to get used to, but once we did, we were blown away by just how comfortable it is. 

The REM-Fit 500 Ortho is amazingly supportive, thanks to a Mediflex foam layer that moulds to the shape of your body and correctly aligns your spine, and those orthopedic springs providing provide upper and lower back support. Luxury memory foam also provides just the right amount of cushioning to pressure points like your shoulders, hips and knees. 

Thanks to a cool gel-infused memory foam layer, you won’t get too hot sleeping on the REM-Fit 500 Ortho, either. We it worked really well, even during a heatwave. While the REM-Fit 500 Ortho isn't the cheapest mattresses around, we think that if you suffer from aches and pains at night it's one of the best mattresses you can choose. It’s also a great option for couples thanks to its low motion transfer, and has great edge support (so you can snuggle right up to the edges without them buckling). 

If you’re not sure whether a firm mattress is right for you, give the 100-night trial a go, or check out our REM-Fit 500 Ortho mattress review for more details.

Best mattress: Dormeo Memory Plus

10. Dormeo Memory Plus

A very comfortable no-flip mattress

Specifications
Best for: Allergies
Sizes: Single - super king
Depth: 17cm
Turn: No
Filling: foam/memory foam
Comfort: medium
Trial: 60 nights
Guarantee: 20 years
RRP: Single: £479, Double: £629, King: £779.99
Reasons to buy
+Extremely cheap – great value+Supportive and durable
Reasons to avoid
-Quite thin-No handles to rotate

The Dormeo Memory Plus is a fantastic memory foam mattress that you can always find for an exceedingly cheap price; you'd have to be having a very unlucky day to ever pay anything near the RRP. It's a medium-firm mattress made with 3cm of memory foam on top of breathable Ecocell 3D foam to give you plenty of support, and it's also anti-allergenic, with a cover that's infused with anti-bacterial, antimicrobial and anti-dust mite protection.

If you like a nice thick mattress then the Dormeo Memory Plus might not be for you. Its svelte 17cm thickness makes it a lot thinner than most mattresses, and it might not be suitable for slatted bases or heavier, but it with an average user rating of 4.7/5 on the Dormeo website it's definitely doing something right. Its thinness means you'll probably need to rotate it a bit more often than other memory foam mattresses, but as long as you look after it properly its 20-year guarantee will help you sleep soundly.

Happy Beds Ortho Royale

(Image credit: Happy Beds)

11. Happy Beds Ortho Royale

The best sprung mattress if you're on a budget

Specifications
Best for: Value for money
Sizes: Small single - Super King
Depth: 25cm
Turn: Yes
Filling: Open coil springs
Comfort: Medium-firm (7.5)
Trial: None
Guarantee: 5 years
RRP: Single: £199.99; Double: £274.99; King: £314.99
Reasons to buy
+Supportive surface and plenty of bounce+Low price point (and regular deals)+Great airflow and won't trap heat
Reasons to avoid
-Requires flipping every 6 weeks-No trial period and only 5 year guarantee

There's nothing particularly advanced about the Happy Beds Ortho Royale. It has none of the fancy features you'll find in most of the other mattresses in this guide, but if you want a great value sprung mattress then it's hard to beat. It doesn't even have pocket springs; instead it has an open coil system that allows air to flow through, with vents for stale air to escape from, resulting in a lovely cool mattress that won't trap heat like memory foam can.

Happy Beds classes this as a medium-firm mattress, ranking it around 7.5. Some reviewers found the Ortho Royale too firm, although for others this extra support is a plus point. Note that as this is a spring mattress, you'll sleep 'on top' of the surface, rather than sinking into it as you would with memory foam. Firmness will also depend on body weight, and the Happy Beds site has a handy tool that lets you input your weight to show you how firm the mattress will feel to you.

There's a hand-tufted damask cover, and satin pads provide a comfy sleep surface. The real star of the show here is the price though: even at RRP it's very cheap, and regular offers make things even more appealing. Note that you're sacrificing a trial period in order to get that cheap price point, and the guarantee is shorter than the industry standard too. But overall we think this mattress offers absolutely excellent value for money.

Best mattress: IKEA Morgedal

12. IKEA Morgedal

Incredibly cheap but not actually at all bad

Specifications
Best for: Small budgets
Sizes: Single - king
Depth: 18cm
Turn: Yes
Filling: memory foam
Comfort: medium
Trial: 90 nights
Guarantee: 25 years
RRP: Single: £125, Double: £165, King: £195
Reasons to buy
+Cheap+Comfortable
Reasons to avoid
-It's basic-Quite thin

Ikea has a bit of a reputation for its weird-sized beds, but don't let that put you off looking at its mattresses; in addition to European sizes, the Ikea Morgedal memory foam mattress comes in UK single, double and king size too. It’s a thick foam mattress in a polyester wrapping, and it’s best suited to a slatted bed base or mattress base. Don’t jump on it straight away: it’s delivered rolled up and needs three to four days to return to suitable flatness. 

In true Ikea style there's nothing particularly cutting-edge about the Morgedal. It's basically a fat chunk of foam that's comfortable and fairly immune to the movements of your partner. The foam can get a little damp if you tend to sweat a lot; if you do, a thick mattress protector is a good idea. There's a 90-day trial period, and it's won a gong from Which?, so it's still got some strong plus points, despite its distinct lack of bells, whistles and 'challenger brand' credentials. If you're on a really tight budget or need something to put in the spare room, this is the cheapest mattress you'll find. 

Which is the best type of mattress?

There are a few different mattress types on the market right now. As you start your hunt for the best mattress, there are certain terms you're going to come across a lot – the difference isn't complex, but it's helpful to understand what each term means before you get shopping. The three main mattress types you're going to come across are memory foam, pocket sprung or hybrid. For more info, head to our memory foam vs spring mattress comparison. 

Memory foam
This type of mattress has exploded in popularity over recent years. Memory foam is a responsive material that reacts to your temperature and weight to mould gently around your body as you lie on it. Memory foam mattresses offer great support and comfort, and are perhaps the most popular mattress type right now, with most of the big brands offering their own takes on this material. 

One potential down-side is that memory foam traps body heat in a way you don't get so much with springs. So in the winter you'll have a lovely cosy bed, but in the summer you might find yourself getting a little warmer than usual – which can be an issue if you sleep hot. Many brands have introduced cooling top layers to counteract this. You can read more in our memory foam mattress buying guide.

Pocket sprung
Pocket sprung is a more traditional mattress type. These mattresses include thousands of small springs inside their own fabric pockets. Although they will adapt to your body shape, they're not as supportive as memory foam, and may provide less movement isolation (problematic if you've got a restless bedmate). They offer a bouncier surface to sleep on – you won't sink into a pocket sprung mattress the same way as you would a memory foam one.

Hybrid
The term 'hybrid' technically could refer to any mattress that's made up of different materials, but it typically means a mattress that combines layers of pocket springs and memory foam. This makeup offers more bounce than memory foam-only mattresses, but with the added support and comfort of a memory foam upper.

There are a few more terms you might come across in your search. These mattress types are a little rarer, but still worth knowing about.

  • Latex: A breathable, springy material that's exceptionally durable and resilient. Can be expensive. 
  • Continuous and coil: Made from a single looped wire, or from single springs fixed with one wire. These are cheaper and less likely to give a good night’s sleep.
  • Bed in a box: This refers to a delivery method, in which mattresses are compressed, rolled or folded into a box for easy home delivery. They're usually foam, or a memory foam and spring combination. 

One more bit of advice before you start shopping: don't put too much emphasis on mattress type. Personal factors like your height, weight, body shape, sleeping style and temperature are far more likely to affect how comfortable you find a specific mattress. All our picks recommended in our best mattress guide above have been designed to deliver outstanding support and comfort for the majority of people – regardless of their material. 

How to choose the best mattress for you

Before buying a mattress, make sure it’s the right size. Your mattress – like your bed – should be 10cm longer than the tallest person sleeping in it. It should also be wide enough for you and a partner to put your hands under your head without your elbows touching (or without touching the edge of the mattress if you’re not sharing). 

Next, do the hand test: lying down on your back, push your hand under the small of your back. If you can’t, the mattress is too soft; if the gap is very large, it’s too hard. And if you have a partner, make sure they try it, too: what feels fine on your own may be like a bouncy castle with someone else on board. 

Lastly, also check whether a mattress needs turning. Many don't these days, but if you’re considering one that does, make sure it has handles.