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Best mattress online 2020: Including the best mattress in a box

Best mattress online 2020: Including the best mattress in a box
(Image credit: Shutterstock)

From our experience, the best mattress online is one that’s supportive, comfortable and reasonably priced. After all, you don’t want to lie awake at night worrying about the small fortune you’ve just spent. Luckily, there are plenty of online mattress companies to pick from, but some are leaps and bounds ahead of others in terms of quality and customer service. 

Plenty of them make audacious claims about delivering your best night’s sleep, but a precious few actually deliver on that promise, and we have them here in our guide to the best mattress online. Some cross-over into our best cooling mattress guide too, as overheating in bed is one of the biggest sleep annoyances many of us face. 

Buying a new mattress should be exciting, not torturous, so we’ve only included online mattress brands that offer a great buying experience. That includes a generous trial period. Why? Because you need time to get used to your mattress. Experts recommend sleeping on it for at least 30 days to see if it really is right for you. It’s the same advice we give when helping you discover the best pillow for your sleep style.

By now, we’re all beginning to understand just how vital consistent, good quality sleep is to our health. A study by the Harvard Medical School Division of Sleep Medicine painted a clear picture of the big role sleep plays in immune function, memory and learning. Recently, scientists also demonstrated a link between broken sleep and heart disease. So outfitting your bed for revitalizing sleep is a must. 

That said, we don’t believe you have to pay through the nose for quality sleep, so we’ve included plenty of affordable mattresses here. On that note, we’ve also rounded-up the best Purple mattress deals, the best Casper mattress deals, and the best Saatva mattress discounts.

Finally, don’t forget that mental health issues such as anxiety, stress and depression also affect sleep, so consider downloading one of the best meditation apps to ease your mind before going to bed, or learn how to stop anxiety ruining your sleep


1. Helix Mattress: Best mattress overall

Best mattress online: the Helix Mattress is our top pick of the best online mattresses

(Image credit: Helix)

Helix Mattress

This is the best mattress for you if you want something more customized

Sizes: Twin to Cal King | Filling: Memory foam and pocket springs | Comfort: Medium | Trial period: 100 days | Full refund: Yes | Weight in box: 89.5Ibs

Tailor mattress to your needs
Customize each side
Firmer than anticipated
Bit too much sink

The Helix mattress is our choice for the best mattress online. That’s because you can fully customize the mattress thanks to an innovative short quiz that you take before you make your purchase. Questions they ask include your firmness preference, weight, height and ideal sleeping position. In total there are six variants of the Helix Mattress, offering different levels of firmness to suit your ideal sleeping preference. 

You can also purchase your chosen mattress in either standard or Luxe version, with the Luxe version benefitting from zoned lumbar support, a premium quilted pillow top and an ultra-cool cover to help you stay cool and comfortable when sleeping. There's also the Helix PLUS, designed for plus size, big and tall people, and offers maximum support alongside a medium feel and body contouring. 

The Helix comes in twin, twin XL, full, queen, king, and California king sizes, with a standard 10-inch depth. The prices range from $600 through to $1,249, which is pretty impressive considering you’re getting a customized mattress that suits your individual needs far more precisely. 

The Helix Mattress is extremely good for motion isolation, too. Why? It's because of the combination of pocketed micro coils and foam. The Helix also benefits from a 100-night trial with full money-back guarantee if you’re not completely satisfied. If you’re new to the feel of memory foam, give yourself a little time to get used to the feel, but do persevere because this is one of the most comfortable mattresses you'll ever sleep on. 


2. Purple Mattress: Best mattress online for back pain

Best mattress: the Purple Mattress is our top mattress for joint and back comfort

(Image credit: Purple)

Purple Mattress

If you're experiencing back or joint pain, rest easy on this beauty

Sizes: Twin to Cal King | Filling: Hyper-elastic polymer | Comfort: High | Trial period: 100 days | Full refund: Yes | Weight in box: 115Ibs

Excellent for pressure relief and joint pain
Ideal for hot sleepers
Heavy and hard to move around
The mattress can feel bouncy

The Purple mattress was a very strong contender for our top pick overall, but we think its true title is that it’s the best mattress for back and joint pain. This mattress has a unique hyper-elastic polymer mattress top which they call Purple Grid technology. This grid adapts to your body to offer the comfort and support that you need and to help ease any aches and pains you may be experiencing. 

The Purple Grid technology also has over 2800 open-air channels which can help neutralize body heat so you don’t get too hot overnight which can often happen with memory foam mattresses. 

The Purple mattress comes in seven sizes: twin, twin XL, full, queen, king, cal king and split king. The RRP ranges from $649 for the twin to $1498 for the split king. We think that this is one of the most budget-friendly mattress-in-a-box products on the market considering the material and technology involved. 

Made up of three layers each designed to relieve pressure points and maintain support on body contours. The mattress composition starts with two-inches of purple grid technology which is then bolstered by two layers of polyurethane foam beneath. It has good edge-to-edge support thanks to the edges being reinforced with denser foam. Whilst the mattress does have a little more bounce, the movement is absorbed by the thick foam core. View the best Purple mattress deals here.


3. Nectar Mattress: Best mattress on a budget

Best mattress: the Nectar Mattress performs well for the smaller price tag

(Image credit: Nectar)

Nectar Mattress

Smaller budget? This is the best mattress for sheer value

Sizes: Twin to Cal King | Filling: Hyper-elastic polymer | Comfort: High | Trial period: 365 days | Full refund: Yes | Weight in box: 105Ibs

365-night trial!
Comfortable and supportive
Some may find it too firm
Can sleep hot

In our opinion, Nectar is one of the best value mattresses on the market. The sizes are twin, twin XL. full, queen, king and cal king. Prices start at $499 with the most expensive in the range the king and Cal king coming in at just $899. It’s certainly cheaper than most of its rivals and that doesn’t mean that it compromises comfort. 

This mattress also comes with a whopping 365-night trial period and should you not fall in love with this mattress within the first year, they’ll collect it and issue a full refund, no questions asked. 

The mattress itself offers a medium-firm comfort and is constructed of five-layers starting with a cooling cover which promotes air circulation and is bed bug resistant. The next layer is a quilted gel memory foam which will contour your body, then you have a gel memory foam layer which will help distribute weight evenly and provide pressure relief. Followed by two layers of hi-density memory foam to support the body and provide a stable foundation. 

The other thing that we really loved about this mattress is that it can hold up to a combined weight of 800lbs. So if you’re a heavy sleeper, it won’t sag or dip too much and still provide adequate pressure relief. 


4. Casper Hybrid: Best mattress in a box

Best mattress online: the Casper Hybrid Mattress is made from springs and memory foam

(Image credit: Casper Mattress)

Casper Hybrid

Enjoy the best of both worlds with this spring and memory foam mattress

Sizes: Twin to Cal King | Filling: Springs and memory foam | Comfort: High | Trial period: 100 days | Full refund: Yes | Weight in box: 99Ibs

Enhanced edge support 
Great for back and side sleepers
Provides pressure relief
Some may find the springs too bouncy

For those who like memory foam but are not ready to give up on their springs just yet, the Casper Hybrid is the perfect solution. This mattress combines springs that relieve pressure on your joints and back whilst providing three layers of foam for comfort. We found that this is particularly good for those who suffer aches and pains and need to feel as though they have added support, especially those who sleep on their backs. 

The Casper Hybrid comes in sizes twin, twin XL, full, queen, king, and cal king. The RRP starts at $795 for a twin and goes up to $1395 for a king or Cal king. Whilst we know these prices are slightly steeper than other hybrid mattresses you can purchase online, Casper are very good at running multiple promotions throughout the year so there are always bargains to be had. 

It’s also worth noting that the Casper Hybrid is only around $200 more than the all-memory foam original Casper but you are getting a lot more support for that money and in our opinion, it’s a better all-round mattress and worth the extra dollars. 

This is the best hybrid mattress because it’s made up of four-layers with three foam layers on top of a layer of 7-inch pocket springs. The edge to edge support is superb and a lot firmer than many of the rival hybrid beds meaning it’s a comfortable bed if you like to sleep on the edge or you struggle to get in and out of your bed. 

This mattress is suited to back and side sleepers, we found it was less comfortable when front sleeping. It also provides excellent relief on aching joints and back pain thanks to the combination of foam and springs. 

The firmness rate is around 8, so it is better suited to customers who like a firm mattress but because of the springs, it does have a certain bounce that may appeal to those who like a medium-firm mattress. 

Casper often runs sales on its mattresses, so be sure to check out our round-up of the best Casper mattress deals and discount codes to see how much you could save - or if there are any free gifts available when purchasing a Casper. 


5. Leesa Mattress: Best mattress online for side sleepers

Best Mattress: the Leesa mattress is superb for side-sleepers

(Image credit: Leesa)

Leesa Original Mattress

Dominant side sleepers, the Leesa is a good mattress choice for you

Sizes: Twin to Cal King | Filling: Memory foam and foam | Comfort: Medium | Trial period: 100 days | Full refund: Yes | Weight in box: 76Ibs

Soft to sleep on
Excellent for side sleepers
Can’t be used with a box spring base
Not suitable for heavy sleepers

This foam mattress is composed of Avena foam, memory foam and base foam, making the Leesa one of the softer-feeling mattresses we tested, which is perfect for those who tend to sleep on their side. The mattress did have a gassy smell for a longer period than other mattresses we tested and we could still smell the plastic after a week, although it became less prominent as the time went by. 

The Leesa comes in sizes twin, twin XL, full, queen, king, and cal king. Prices start from $599 for a twin and the King and cal King is $1199. The Leesa Original is 10” in depth a the first layer is a 2” Avena foam followed by 2” of memory foam and finally, 6” of base polyfoam that acts as the mattress’ support layer. The top layer is designed to be breathable so the bed doesn’t get too hot which is common with all-foam mattresses. 

The Leesa is also extremely good for motion isolation as the foam means you won’t feel your partner fidgeting or getting up. For the price, this is certainly the best mattress for side sleepers thanks to the soft feel of the Avena foam alongside the supportive memory foam base layers.


6. Saatva Mattress: Best mattress for a touch of luxury

Best mattress: the Saatva Mattress is a luxury mattress and therefore has a higher price

(Image credit: Saatva)

Saatva Mattress

Expensive, but one of the most comfortable on test

Sizes: Twin to Cal King | Filling: Pocket springs with pillow top | Comfort: High | Trial period: 120 days | Full refund: No ($100 delivery un-refundable) | Weight in box: 110Ibs

Multiple firmness options
Choice of two depths
Heavy
$99 fee to return mattress if not satisfied

We're partial to a little bit of luxury, and thanks to Saatva we found it. In terms of sheer comfort, the Saatva mattress was one of the best mattresses we slept on during testing, but that luxury is reflected in the price tag. However, we do believe in paying for quality, so we think this one is worth the extra cost. 

Unlike other online mattress companies, the Saatva mattress doesn’t come in a box, instead, they offer white glove delivery installing your new mattress in the room of your choice. Whilst it may not be as compact as a mattress-in-a-box, it does mean it’s ready to use right away and you don’t have to waste your energy trying to lug the box around. 

This mattress comes with a 120 night trial period but you do have to pay a $99 return fee if you change your mind. The Saatva comes in a twin, twin xl, full, queen, king and cal King and price ranges between $699 and $1599. You also have a choice of depth between 11” or 14.5”.

This is classed as the best-sprung mattress because it’s comprised of three layers. The first layer being a 1.25-inch layer of foam known as a euro-style pillow top which aids pressure relief and gives the mattress a more luxurious feel. The next layer is split between memory foam and coils and the final layer is made up of 7-inch steel hourglass-shaped support coils. 

The coils provide support, prevent sagging and help with the air circulation, making it feel comfortable and luxurious all at the same time. If you’ve ever wondered what mattress you should buy to get that luxury hotel feel, then this is the one. 


7. Brooklyn Signature: A great choice for hot sleepers

Best mattress: Brooklyn Signature Mattress is ideal for hot sleepers

(Image credit: Brooklyn)

Brooklyn Signature Mattress

Savor sweet, cooling relief as you snooze

Sizes: Twin to Cal King | Filling: Memory foam, hyper-elastic foam and pocket springs | Comfort: Medium | Trial period: 120 days | Full refund: Yes | Weight in box: 98.8Ibs

Cooling design
Choice of firmness settings
120-night trial period
You may prefer a bouncier bed

If you’re anything like me then you’ll know what a nightmare it is to own a mattress that holds the heat. Thankfully, the Brooklyn Signature is designed to help sleepers stay cool so they can wake up refreshed the next morning. 

The Brooklyn Signature is hands down the best cooling mattress thanks to the top layer of the mattress being infused with TitaniumGel and the additional airflow created via the pocketed coil layer. This helps the entire mattress maintain a comfortable temperature no matter what the weather. 

It’s also a great mattress for any type of sleeper and perfect for those who love the feel of memory foam but need the support of a sprung mattress. The Brooklyn Signature Hybrid is made up of four layers of foam and pocketed coils. The base layer is 1” of dense support foam with 6” of individually pocketed coils sitting on top. There is then a 2” layer of TitanFlex support foam - this layer differs slightly depending on your chosen thickness levels. Finally, the top layer is the “TitanFlex Comfort” layer which is a patented hyper-elastic propriety foam that is soft but still responsive. 

It comes in a range of sizes including twin, twin XL, full, queen, king, and Cal King. The RRP prices range from $599 to $1249 making it a reasonable price for a Hybrid mattress of this quality. We found this mattress extremely comfortable to sleep on, it’s perfect for couples, especially if one of you is a fidgeter or like me gets hot overnight.


How to choose the best mattress for you

Factors such as whether you sleep on your side, back or stomach, whether you share a bed with a partner and even your weight and height should be things you consider before you make your next mattress purchase. 

Firmness is another thing that you should factor in, usually a firmer mattress suits heavier sleepers or those who sleep on their front or back. Medium firmness is suited to those who need extra support for their spine, back and neck. Whilst those who are side sleepers benefit from a softer mattress that will mold to your body’s natural curvature. 

If you share a bed then you’ll want to opt for a mattress that has limited motion transfer. Not everyone sleeps the same so if you’re sharing with a partner who gets up and down a lot or tosses and turns, the last thing you want is a spring mattress as they can be bad for motion transfer, whilst memory foam mattresses are great at limiting movement.

What’s the best mattress brand for back pain?

Back and joint pain can be made worse by choosing a bad mattress. As we mentioned above, firmness plays a big part in making sure that the mattress provides enough support to keep the spine and neck in a neutral position all night. The majority of mattress companies now realize how important it is to design their mattresses to promote good health so in our reviews we cover which mattresses are best for joint and back pain quite extensively. 

Best mattress: sites often show you what is inside their mattresses

(Image credit: Brooklyn Mattress)

What are mattresses made from?

This guide focuses primarily on mattresses that are either memory foam or hybrids meaning that it’s a combination of foam, latex, and coils. These are now the most popular and in our opinion, the best mattresses on the market. 

Memory foam mattresses are good for providing pressure point relief and are ideal for lighter and side sleepers. They hug your body and bounce back once you get up. They do tend to be hot although a lot of the companies we recommend offer cooling technology so that you don’t overheat. 

Spring and coil mattresses provide a little more bounce. When they are combined with memory foam, they can promote good air circulation and also help with distributing body weight evenly as well as providing good motion transfer isolation.

How much should you pay for a good mattress online?

Mattress prices vary wildly depending on the company that you choose and of course, what discounts are available at the time. We always recommend putting quality above price, we know that’s easy to say but a mattress is an investment in your health. 

How to get the best mattress online deals

We love finding the best deals on mattresses here, and our prices update daily, so if you’re looking to get the best mattress deal possible, it’s worth bookmarking this site so that you get the best prices without having to go searching all the sites yourself. 

Mattress companies have regular sales throughout the year. Whilst some companies such as Purple and Saatva don’t ever discount their mattresses, they do often have deals on free accessories when you make your purchases. Waiting for the sales can often save you up to $200 dollars, if not more during big sales events.