Having trouble sleeping? We’re here to help you find the best online mattress for body support, optimal comfort, and sleep quality.


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Sleep can make or break your day. If you wake up feeling energised and refreshed, concentrating and functioning will be a breeze. On the other hand, if you spend most of your nights tossing and turning, the whole day can feel like a challenge. You’ll be fatigued, irritable, and reaching for the nearest caffeine source. 

According to the Eunice Kennedy Shriver National Institute of Child Health and Human Development, sleep deprivation might lead to serious health problems, including diabetes, high blood pressure, heart disease, and obesity. So it’s something to take seriously. If you need to improve your quality of sleep, it might be time for you to buy a new mattress. 

Buying a mattress is now easier than ever, especially with so many online companies selling state-of-the-art mattresses and delivering them straight to your door. Some even come with all the bells and whistles, like memory foam, cooling layers, and anti-wicking fabric, to help you rest easy and keep pain at bay. 

Now, you can’t just settle on any online mattress. It has to meet your needs, whether you need to decrease joint stiffness or stay sweat-free at night. It shouldn’t require much time to put together, or else you’ll most likely not use it. With all the options out there, it can be challenging to find the right model. Before you drop major money on an online mattress, there are some things you might want to consider:

  • Bed size — Don’t play Goldilocks when you’re shopping for an online mattress. Take measurements of your bed first, so you’re prepared to compare models. If a mattress has equivalent dimensions, you’ll know it’s the right fit. If not, skip it, and see your other options. It’s important that a mattress is available in many bed sizes. You don’t want to waste time returning or exchanging an online mattress. 

  • Sleep style — Do you sleep on your back, on your side, or stomach? Knowing your sleeping style is key for buying an online mattress. Some mattresses are extra firm, while others are made with softer materials. You want to be super comfortable while you catch up on some all-important sleep. 

  • Health concerns — Speak with your doctor first before choosing an online mattress. If you’re prone to joint pain, you’ll want to opt for a mattress that offers good body support. For overheating issues, choose a mattress with cooling technology. Concerned about your environmental impact? Some mattresses are even made with eco-friendly materials, so you can rest easy and minimise your carbon footprint. 

  • Warranty — Online mattresses don’t always come cheap, so you’ll want to consider a company’s warranty before making a commitment. Look for warranties that offer flexible coverage and support, so you won’t have to spend an arm and a leg for repairs and replacements. 

Whether you are all about memory foam or temperature regulation, there’s an online mattress out there for your sleeping needs. Here are our top six picks for the best online mattresses. 

Great for most sleep positions • Three layers of foam make it super comfy • Hassle-free setup by Casper’s team

Rest easy with The Essential Mattress by Casper, which offers comfort, durability, and stress-free setup for the ultimate sleeping experience

1. The Casper Essential Mattress

Comfort, durability, and stress-free setup make The Essential Mattress by Casper a top pick for all of your sleeping needs.

  • Dimensions:
    Sinlge (90 x 190 x 24 cm), Small Double (120 x 190 x 24 cm), Double (135 x 190 x 24 cm), King (150 x 200 x 24 cm), Super King (180 x 200 x 24 cm)
  • Sleep factor:
    Good for back, side, and stomach sleepers
Comfort, durability, and easy setup make The Essential Mattress by Casper a top pick for a good night’s sleep. 
Great for back, side, and stomach sleepers, this online mattress has three foam layers for body comfort. The top layer is soft and made with breathable material to keep sweat at bay. A second layer minimises pain by cradling curves and supporting pressure points. Completing the comfort factor is the base layer, which reinforces the top layers to help you rest better. 
Foam layers aren’t the only perk of this mattress. It has a durable cover that’s built to withstand wear and tear. Plus, its charcoal colour easily hides leaks, just in case you’re drinking water and other beverages in bed.
Need help with mattress assembly? Casper has your back. It offers in-home setup, where their team will hand-deliver the mattress to you, set up any products that require assembly, and remove all the packaging once they’re done, so you can use your mattress right away. 
Casper’s 10-year limited warranty also earns bonus points. The warranty promises a decade of good sleep and applies to some defect scenarios, such as deterioration. If you’re not satisfied with your purchase, you can contact Casper for customer service support. 
Steven, a Casper customer, writes: 

“Having read many of the positive reviews before purchase I was expecting something great but to be honest it’s even better than I thought possible. It’s by far the most comfortable mattress I’ve ever had. Thanks Casper. Absolutely superb!”

Great for most sleep positions • Three foam layers for contouring and comfort • Compatible with most bed types • Forever warranty

You’ll have to set it up yourself

You’ll feel like you’re sleeping on a cloud with The Nectar Mattress, because it has three foam layers and a breathable cover for optimal comfort

2. The Nectar Mattress

The three foam layers and a breathable cover combine for optimal comfort.

  • Dimensions:
    Twin (96.5 x 190.5 cm), Full (134.5 x 190.5), Queen (152.5 x 203.5 cm), King (193 x 203.5 cm)
  • Sleep factor:
    Good for back, side, and stomach sleepers
Wouldn’t it be nice to lie down on a cloud? The Nectar Mattress comes close to this dream with its advanced comfort features. 
Three foam layers make all the cozy magic happen. An adaptive high-core memory foam layer supports your body sans sinking, a gel memory foam evenly distributes your weight, and a quilted gel memory foam increases breathability and air circulation. 
Sweat can interfere with your sleep routine, but this online mattress keeps it at bay with its Tencel cooling cover. This fabric helps draw away heat and perspiration, so you can rest at the proper body temperature. 
Setup is easy for any Nectar mattress. All you have to do is remove the packaging and plastic cover, let the mattress expand, and then you can use it on your bed. There’s minimal effort required on your part. 
When it comes to warranties, Nectar is at the top of its game. It has a forever warranty (yes, we’re not kidding), which means that if you bought a mattress, use it, and it experiences wear and tear over time, Nectar will replace the mattress at no charge. 
J.J., a Nectar customer, writes:

“This mattress is so comfortable! I really can’t get over it. We bought it when we moved to our new house. It was perfect timing as it came in the exact day that we moved in. My wife was stressed at the idea of shopping for a mattress in person so being able to do everything online made it super easy. Delivery was quick and setup was incredibly easy. We bought a King. It’s a really comfy bed – not too firm, not too soft. I appreciate that it comes with a nice cover. Lastly, company communication has been great.”

Great for most sleep positions • Three layers of foam for body support • Option for white glove delivery or self-assembly

No moisture-wicking fabric

Pain bothering your sleep routine? The Leesa Mattress is here to help with its three-layer foam construction for amazing body support

3. Leesa Mattress

The Leesa Mattress is here to fight pain with its three-layer foam construction for amazing body support.

  • Dimensions:
    Single (90 x 190 x 25 cm), Double (135 x 190 x 25 cm), King (150 x 200 x 25 cm), Super King (180 x 200 x 25 cm)
  • Sleep factor:
    Good for back, side, and stomach sleepers
Body support is crucial for a good night’s sleep and the Leesa Mattress can help you drift off to dreamland pain-free.
Its three-layer foam construction helps you stay comfortable while you sleep. A two-inch responsive foam layer hugs your curves and delivers the right amount of bounce for shifting positions. In the middle of the mattress, a two-inch recovery foam layer contours to your body shape and eases joint pressure. On the bottom, a six-inch core foam layer supports your body shape. You won’t have to worry about stiffness or sagging, because this construction will help you rest easy during the day or night. 
White glove delivery is available for the Leesa mattress, but you can also set it up yourself. First, unbox the mattress on its side. Position the mattress on a solid or slatted foundation, remove the outer layer of plastic wrap, and tear away the inner plastic. The mattress will then expand in about an hour and take a few days to achieve a firm shape. 
Another plus of this mattress is its 10-year limited warranty. If there’s a defect covered under the warranty, Leesa will repair or replace the mattress. It does not cover comfort preference or damage from improper equipment. You can contact Leesa if you have any issues with your mattress. 
Margaret, a Leesa customer writes: 

“We love the Leesa mattress. I move about in the night and it doesn’t disturb my partner as his side of the mattress doesn’t move at all. It does take a few nights to adjust if you are used to a sprung mattress but once you adjust you won’t ever want to go back. I’m so happy with it that I’ve bought one for my spare bed too.”

Good for pain issues • Three layers of foam keep the pressure off • Crafted in UK-based factory

Has had issues with over-heating in the past

Back, side, stomach? The mattress keeps every type of sleeper supported

4. The Eve Original Mattress

Your mattress needs to be your sanctuary from discomfort and Eve have created the perfect place to recharge your batteries.

  • Dimensions:
    Single (90 x 190 cm), Double (135 x 190 cm), King (150 x 200 cm), Super King (180 x 200 cm)
  • Sleep factor:
    Good for back, side, and stomach sleepers
The Eve Original Mattress has a slightly firmer feel meaning sinkage is slowed, and quick sinkage can lead to discomfort. The top layer of memory foam really hugs the sleeper, providing great support and pressure relief.
So there is still sinkage, as you would want with a top layer of memory foam, but with the Eve you lie down and notice more of a gradually increasing level of sinkage — soothing you into a sleepy haze.
Eve’s level of support is where it stands apart from others in the field. Whatever your sleep preference, you shouldn’t have much getting to sleep as the Eve offers support to side, stomach, and back sleepers equally. The pressure relieving qualities of this mattress allow you to be flexible with your sleeping style and not feel trapped.
You can get your mattress when it suits you with flexible delivery slots. And you get 100 nights to see if you really like it, with hassle-free returns from your room if you don’t. Eve go the extra mile so ensure you get a product you like.
Eve reviewer Alvin says: 

“After months of putting up with back pain we decided to purchase a new mattress with Eve. Fast effective, great service and a product that it simply amazing for the quality you would easily expect to pay double.”

Excellent support • Cheaper than other pocket-sprung mattresses

Warmer than other mattresses in list • Difficult to move mattress around without handles

With 2,500 conical pocket springs and responsive memory foam, your sleep troubles should be a thing of the past

5. Simba Hybrid® Mattress

A mattress with a unique combination of 2,500 conical pocket springs and responsive memory foam is ideal for those that move.

  • Dimensions:
    Single (90 x 190 x 25 cm), Small Double (120 x 190 x 25 cm), Double (135 x 190x 25 cm), King Size (150 x 200 x 25 cm), Super King Size (180 x 200 x 25 cm)
  • Sleep factor:
    Good for back, side, and stomach sleepers
Simba’s Hybrid mattress combines memory foam with micro pocket springs. There are five different materials used in Simba’s mattress in total. 
The Simba Hybrid is one of the premier ‘bed-in-a-box’ options, unless you get very warm in bed – in which case you’re best off avoiding memory foam completely.
The Simba Hybrid strikes an excellent balance between comfort and support, and it doesn’t lose those postitive attributes when it gets warm or after its initial break-in period.
The mattress could do with some handles to make manoeuvring it easier. But let’s focus on the good as you’ll be very hard pressed to find a more comfortable pocket-sprung mattress for the same price.
This mattress also comes with a 100-day money-back guarantee. A little peace of mind to help you drift off.
Donna, a Simba customer, writes:

“The best mattress I have ever had. It really does support in all the right places. My husband likes a firm mattress and I like a softer one but this Simba mattress is somehow giving the right comfort for us both. Simba you are fabulous and your pillows are just as amazing too! Thank you Simba for our night time comfort.”

Very comfortable • Handles make transportation easier

More expensive than others

A great medium-firm mattress that accommodates a variety of sleeping positions

6. The Emma Original Mattress

Combining different materials and structures means optimal pressure distribution can be achieved, creating the perfect conditions for restful sleep.

  • Dimensions:
    Single (90 x 190 x 25 cm), Small Double (120 x 190 x 25 cm), Double (135 x 190 x 25 cm), King (150 x 200 x 25 cm), Super King (180 x 200 x 25 cm)
  • Sleep factor:
    Great for back, side, and stomach sleepers
OK brace yourself for the science. Conformable Next Generation Airgocell® foam adapts to any body shape thanks to its point elasticity. So that basically means that pressure distribution on the body is improved which supports adjustment, so you can sleep well in any position.
Emma has combining different materials and structures meaning this optimal pressure distribution can be achieved, which in turn creates an ideal condition for the restful sleep you have been craving.
Breathable foam allows proper ventilation thanks to its open pores, meaning this mattress is a great option if you are prone to over-heating and sweating. In addition, a cover with climate control fibre provides for particularly fast moisture removal ensures a completely pleasant sleeping climate — what more could you ask for?
Tracey, a Emma customer, writes:

“Both my partner and myself have had the best nights sleep in years, we changed our mattress three times over the last ten years and this was the fourth. we will not be buying anymore as long as our nights remain as comfy with the emma mattress. It was delivered without problem and we slept on it the first night, it is firm but not too firm and we cant feel each other turn over in the night as my side of the mattress doesn’t move when my partner turns like all the other mattresses did. So happy.”


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