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Mattress buying guide: How to choose a mattress for the best night’s sleep

How firm your mattress is will affect how well you sleep – the type of firmness you need will depend on your sleeping position, height and weight (The Independent)
How firm your mattress is will affect how well you sleep – the type of firmness you need will depend on your sleeping position, height and weight (The Independent)

Getting a good night’s sleep is essential to staying happy and healthy.

But buying a mattress without doing your research first can lead to sleepless nights and achey mornings, if you aren’t sleeping on a supportive base.

And mattresses can cost anything from a few hundred pounds to thousands, so you’ll want to make sure your chosen mattress is worth the investment before you buy.

For more guidance, see our best mattress roundup of tried and tested products.

Here, we’ve put together everything you need to know before you hit the high street (or browse the web – online-only mattress companies are on the rise).

Read more

Whether you’re a side sleeper or suffer from chronic back pain, read on to find out what option is best for you.

You can trust our independent reviews. We may earn commission from some of the retailers, but we never allow this to influence selections, which are formed from real-world testing and expert advice. This revenue helps us to fund journalism across The Independent.

Types of mattress

Open spring mattress: Also known as open coil or continuous coil mattresses. These contain one long piece of metal wire coiled into numerous springs. There’s also an additional border rod or wire to maintain shape and provide structure. It’s a great value for money option, although sides are machine-stitched rather than hand-stitched, but they are lighter than other models, making them easy to turn. They tend to be less supportive than other mattresses too, so are most suited to guest bedrooms or as children’s beds, where they are used occasionally or will need to be replaced regularly anyway.

Pocket spring mattress: This type of mattress is more luxurious, as it’s made from individual, small springs housed in their own pocket of fabric. This means each spring moves independently, providing more support than open spring mattresses. You can buy soft, medium or firm versions, depending on your preference, and they are more breathable than memory foam or latex mattresses (so ideal if you’re always getting too hot during the night).

These are heavy to turn though, and can be filled with natural materials such as lambswool which may agitate allergies. This is a good option if you’re looking for a bed for two people, as the separate springs will cater for your different needs and weights, while they will also minimise the risk of you rolling towards your partner in the middle of the night.

Herdy Sleep mattress (Herdy)
Herdy Sleep mattress (Herdy)

Bed-in-a-box: The game-changer of the sleep world, these mattresses have revolutionised the way we buy our beds. Casper, one of the first bed-in-a-box companies, launched in the UK in 2016 and its popularity has seen other brands such as Simba and Leesa follow suit. The name refers to the delivery method; removing the painful task of visiting mattress shops and waiting weeks for delivery, these mattresses are ordered online and arrive within days.

Usually compressed and rolled into a box, there’s no need to “pivot!” like Ross and Rachel from Friends with one of these. Unravel the mattress and it will be ready to use within a few hours. They are usually made from foam or a hybrid between memory foam and springs.

Memory foam mattress: These more modern mattresses are made from memory foam, which is a mouldable material that also responds to temperature and weight, and has hypo-allergenic properties. This means it will mould to the shape of your body, absorb your weight and relieve pressure on your joints. Not everyone likes the sinking motion of this type of mattress, and it can get rather warm, but it’s ideal for those who need support or suffer from a bad back, as it will maintain posture and align your spine horizontally when sleeping on your side.

Read more: 10 best memory foam pillows that give comfort and support for a better night’s sleep

Latex mattress: As the name suggests, these mattresses are filled with latex foam, which is an especially breathable material, so you won’t overheat in the middle of the night. It’s also extremely durable and should last for many years. And it’s a good option for those with allergies or asthma. They can feel rather solid at first though, so they’re better suited to those who prefer a firmer bed. Usually heavy, latex mattresses can be difficult to turn and cheaper versions can develop lumps and dents over time.

Hybrid: Drawing from a combination of materials that usually include memory foam, latex and pocket springs, hybrid mattresses are designed to give a more balanced sleeping experience. They often come with a pocket-sprung base and a memory foam top layer, providing both comfort and support – alleviating aches and pains by responding to your body’s shape.

Simba hybrid pro (Simba)
Simba hybrid pro (Simba)

Continuous and coil: A popular budget option, a continuous coil mattress is made from a single looped wire, while an open coil mattress is made from single springs fixed together with one wire. These are significantly cheaper than other mattress types, but be warned that with the attractive price tag comes the likelihood of these mattresses wearing out and sagging quickly. These mattresses also move around a lot with you as you sleep – as they are designed as one unit – so if you or your partner tosses and turns in the night, we’d suggest you consider other options.

Mattress sizes

These are the UK standard sizes for mattresses:

  • Small single: 75cm x 190cm

  • Single: 90cm x 190cm

  • Small double: 120cm x 190cm

  • Double: 135cm x 190cm

  • King size: 150cm x 200cm

  • Super-king size: 180cm x 200cm

  • Emperor: 200cm x 202cm

  • Large emperor: 215cm x 217cm

Mattress firmness

How firm your mattress is will affect how well you sleep. The type of firmness you need will depend on your sleeping position, height and weight. Here we explain what level of firmness is best for what type of sleeper.

Soft: Side sleepers or those who change positions during the night are best suited to soft mattresses. This is because the way you sleep already relieves pressure from your spine so you want your mattress to mould to your body’s natural position.

Medium soft: This is ideal for those who change their sleeping position during the night, as it will still mould to your body position but provide a little more support.

Medium firm: This is best for people who sleep on their back as you require extra lower-back support, which this type of firmness offers.

Firm: This type of mattress is ideal for those who sleep on their front, are over 15 stone or suffer from back pain. This is because it will keep your back in a relatively comfortable and stable position without allowing you to sink into it as you sleep, which can cause lower-back pain.

Otty hybrid mattress (Otty)
Otty hybrid mattress (Otty)

How should you sleep while pregnant?

During your first trimester, you’ll often feel sleepy and want to nap. It’s important you get the rest you need so sleep in whatever position feels most comfortable, including on your front or back.

In your second trimester, you’ll feel the baby’s weight more, which can feel uncomfortable and put extra pressure on certain areas of your body. This is when a soft mattress will help, while your bigger bump means the recommended position to sleep in is on your left side, as sleeping on your back will cause your bump to press against a main blood vessel, which may cause you to feel faint.

During your third trimester, your lower back may be a source of pain as it supports your baby’s increasing weight. To ease this, continue to sleep on your left side and with a pillow under your head, between your knees and under and around your bump to ease discomfort and take pressure off your muscles and hips. We’ve also reviewed pregnancy pillows to help mums-to-be sleep.

What mattress do you need if you suffer from joint or back pain?

A good mattress needs to give both support and comfort and that includes ones for those who suffer from back problems.

Although a firm mattress is recommended by some retailers, you should always look for a mattress that keeps your back aligned while sleeping and relieves pressure points along your spine and joints. This has a lot to do with your weight (the heavier you are, the firmer your mattress should be), so it’s best to try a mattress before you buy – many online retailers now offer a trial period where you can return the mattress and get your money back if you don’t think it’s right for you.

The pillow you use will also affect your sleeping position and back alignment so make sure you pick one that suits your needs. Take a look at our pillow reviews to find out more.

Mattress care

Once your mattress is delivered, make sure you let it air for at least four hours. This will remove any storage smells of damp or cold. Ideally, the mattress should then be aired weekly by removing the bed linen. Remember to turn your mattress regularly too. This will stop dips forming and your weight altering part of the mattress, causing uneven sleeping.

Harrison Spinks velocity (Harrison Spinks)
Harrison Spinks velocity (Harrison Spinks)

Having a mattress protector will also help keep your mattress clean, prolonging its life. This is a sheet that goes on before your bed linen (and mattress topper) to protect your mattress from any stains or dirt.

You should aim to replace your mattresses every eight to 10 years though. This is not only for hygiene reasons but because it will soften over time, reducing the support it gives you. If you feel sore when you wake up or you find you sleep better in other beds, it’s time for a change.

Mattress toppers

A mattress topper is an extra layer of cushioning that goes over your mattress before you put your bed sheets on. They provide additional support and comfort, while also making your bed feel more luxurious and cosy. You can pick from a variety of materials: goose feathers, polyester, cotton and wool to name a few. If you’re looking for one to complete your bed, take a look at our mattress topper reviews.

IndyBest’s Best Buy mattress

Eve Sleep premium hybrid: £645, Evesleep.co.uk

 (Eve Sleep)
(Eve Sleep)
  • Sizes available: Double, king, super king

  • Mattress depth: 28cm

  • Material: Memory foam and springs

  • Trial period: 100 nights

  • Guarantee: 10 years

This extra-deep, vacuum-packed hybrid mattress is next level, in our opinion, especially when it comes to people who sleep at least part of the night on their backs – and, unlike the Emma hybrid that goes for folk of any shape and size. This is particularly good news for tall and/or overweight back sleepers, for whom no other mattress came close in our tests.

The durability is outstanding, so it should last you longer than other mattresses. It also gets 10 out of 10 from us on breathability, comfort and support, being just slightly firmer than medium. Eve says it’s down to the combination of special layers and years of product development, focus groups and testing. The top provides a comfy lift, followed by a contouring memory foam layer, then a firmer foam support layer and a sturdy foam base layer that also encloses full-sized pocket springs. You won’t disturb your partner when you roll over and the cover is washable. It does smell a bit at first, but not for long, and no mattress scored higher for edge to edge support.

Buy now £645, Evesleep.co.uk

Read our complete round-up of the best mattresses 2021