King Size Mattress

Discover king size mattresses at Heal's, with organic, pocket-sprung and memory foam constructions. Each model pairs supportive cores with natural fillings or responsive foam, and comes with trusted guarantees. Explore the king size mattress collection online today to upgrade your bedroom.
  • Organic Sleep 3000 Mattress Super King / Firm Organic Sleep 3000 Mattress Emperor / Medium
  • Bedstead Traditional Mattress Super King / Firm Bedstead Traditional Mattress King / Firm
  • Organic Sleep 1500 Mattress Single / Medium Organic Sleep 1500 Mattress Single / Medium
  • Elite Divan Mattress Super King / Firm Elite Divan Mattress Double / Firm
  • Premium Sleep Cashmere Mattress Emperor / Soft Premium Sleep Cashmere Mattress Super King / Medium
  • Baronet Superb Divan Mattress Super King / Firm Baronet Superb Divan Mattress King / Firm
  • Devonshire Divan Mattress Super King / Firm Devonshire Divan Mattress King / Firm
  • Natural Hybrid 3000 Mattress Continental King / Firm Natural Hybrid 3000 Mattress Super King / Firm
  • Premium Sleep Silk Mattress Super King / Soft Premium Sleep Silk Mattress Super King / Medium
  • Natural Hybrid 1500 Mattress Continental King / Firm Natural Hybrid 1500 Mattress Super King / Medium

    A UK king size mattress measures 150cm by 200cm, which is 15cm wider than a double and 30cm narrower than a super king. European king sizes run slightly differently at 160cm wide, so check the frame dimensions before ordering. Depth varies between 18cm and 35cm.

    Pocket-sprung and hybrid king size mattresses tend to suit couples best, as individually-wrapped springs reduce motion transfer between sleepers. Choose a medium-firm tension for mixed sleeping positions, and a zoned construction if weights vary significantly. Natural-fibre toppers improve temperature regulation.

    Single-sided king size mattresses need rotating head-to-foot every month for the first six months, then every three months thereafter. Double-sided models should be flipped as well as rotated. Follow the specific care instructions from the manufacturer for the best long-term wear.

    Upgrading from a double to a king adds 15cm of width, which makes a noticeable difference for two sleepers, especially anyone tall or with disrupted sleep patterns. The extra space reduces disturbance and allows more varied positions. Confirm your bedroom can accommodate the larger frame before committing.

    • How To Choose A Mattress
      Buying Guides
      How To Choose A Mattress
      Choosing a mattress is a minefield of technical terms and personal preferences. Plus, being in the midst of a pandemic makes it even harder to make an informed decision. To help you make an informed decision that’s right for you, your needs and your body we asked our Sleep Team to lend a hand. Mousami, Sara and Siria are normally based in store and are genuine experts when it comes to helping our customers find the perfect place to rest their heads. We asked them to apply their years of experience to help you choose the right mattress from the safety of your own home. Why should I spend more money on a handmade mattress? Sara & Siria: A hand-crafted mattress should last you longer. The tufts in a tufted mattress help keep all the fillings in place. Most of our mattresses come with long warrantees guaranteeing a quality product. Mousami: The attention to detail and time taken to create a handmade mattress means a longer-lasting finish. Standard mattresses often use glue to hold the mattress together and over time this causes soft layers to fall apart. Plus, if a multi layered mattress is not tufted the materials inside won't hold together for long. The tufting technique keeps the materials for shifting and sagging. Why are natural materials important in a mattress? S & S: A number of toxic chemicals are often used in the production of a synthetic mattress, making these types of mattresses less environmentally friendly. Wool, for example, has a natural flame-retardant quality so it doesn’t need to be treated with flame retardants and is completely non-toxic. Materials like cotton are longer-lasting because they are compressed and tufted, compared to synthetic memory foam which breaks down a lot faster because, like a sponge, it retains moisture. Natural materials are generally more breathable, which means they regulate your body temperature. On the other hand, foam and memory foam are heat-activated and are designed specifically to retain and use your body heat in order to contour to the body’s shape. This causes your baseline body temperature to rise over the course of the night. Because of this, memory foam can make you toss and turn, reducing the quality of your sleep. What are the benefits of a mattress with latex? S & S: Latex is a natural material produced from the sap of the rubber tree (Heves Brasiliensis) and unlike cotton and wool has an in-built recovery memory keeping the mattress plump with a springy feel. It’s hypoallergenic and is naturally resistant to mould and mildew. A latex mattress also helps to minimise the stress on joints. What is the difference between tension and feel? S & S: Tension refers to the strength of the spring relative to the gauge of the coil. Feel is how the mattress actually feels when laying on it. For example, a medium tension in our Organic 1500 feels slightly softer than the medium tension in our Organic 3000. Most of the mattresses to tend to feel slightly firmer with a higher spring count. Some mattresses also feel ‘softer’ – this isn’t to say that the springs are not as supportive, but the fillings create a more sumptuous feeling as if you are sinking into the mattress rather than sleeping flat on top of it and this choice is matter of personal preference. M: The overall feel of the mattress depends more on the how the materials inside are layered on top of the spring pocket layer. The darker and wirier materials like horsehair and horsetail often sit closest to the springs to provide more spring, support and firmness. The lighter materials like wool and cotton provide a cushioning feel so they are the outer layers. You can have two medium tension spring mattresses but topped with different materials will change the overall feel as this is the layer you’re immediately lying on. What’s the difference between pocket springs and coil springs? M: Pocket springs offer more support than coil springs. The individual springs that make up the mattress are housed in their own little pockets and are free to work independently of each other, unlike coil springs that are all linked together and tend to move as one. On an open coil mattress, movement spreads across the whole mattress, so if your partner moves in the night you will move too. With pocket springs, because the springs are individually housed, movement is isolated to that specific area of the mattress. This makes a pocket-sprung mattress ideal for people with two different body weights because they reduce that roll together movement. How many pocket springs should I get in a mattress? S & S: The more pocket springs you have the more localised support the mattress will provide as the diameter of the coil will have decreased to fit the greater number of springs. As a result, you have more springs working to support and contour around your body. However, I usually tell customers not to focus too heavily on spring count. The reason being is that some retailers will have mattresses with spring counts in the tens of thousands but these would be very tiny tightly packed springs with not much durability to them. We tend to focus on the quality of our springs rather than quantity. M: Buying a decent quality pocket spring mattress you should make you have a minimum of 1000 pocket springs for a king size mattress. 1500-2000 is high springs count and over 2000 is very premium spring count. What are micro pocket springs? M: Micro pocket springs are smaller pocket springs usually used by manufactures to increase the spring count as customers associate the number of springs to the quality of a mattress. A full sized spring will be a lot more supportive than micro pocket springs because it has more suspension so this will even out uneven weights more effectively. What is ticking? S & S: Ticking is the fabric that is used to cover mattresses. This can be made from cotton, viscose, wool etc. Again, a natural fibre will help with comfort and hygiene. M: The composition can affect your quality of sleep, as some ticking is more breathable, like cotton and linen. The composition of the ticking can also make the mattress feel firmer. What is side stitching? S & S: Side-stitching helps keep the mattress’ walls firmly in place. The stitches go roughly 15-20 cm into the mattress with the thread going around the pocket springs and fillings to anchor everything into place. Higher-specification mattresses have more rows of side-stitching to help contain all the extra layers of fillings and give the mattress edges increased structure and longevity. The side-stitching on most cheap mattresses is usually there purely for cosmetic reasons and does not have the same structural function. How often should I clean a luxury mattress? S & S: Rotate or flip it three or four times a year - every season is ideal. We would also recommend that you do this more often when you first receive it to help the mattress settle – like breaking in a pair of good quality leather shoes. You can vacuum your mattress to remove any dust, hair and other debris. If there are any stains which have yet to set in, blot the area with a clean damp cloth. However, the best way to keep your mattress clean is with mattress protector – ideally composed of natural.
    • Total Recoil: Why Mattress Springs Count
      Buying Guides
      Total Recoil: Why Mattress Springs Count
      Don’t get done, get sprung with our guide to all things mattress springs. A mattress is just a mattress, right? Wrong. There are a number of minute factors that can determine the type, comfort and quality of your mattress, one of the key elements being the type of springs used inside. The foundation of a satisfying night’s sleep, we're peeling back the layers to uncover the past, present and future of luxury mattresses. The birth of sprung mattresses First developed in the 15th century, coil spring mattresses really took off in the 1800s thanks in no small part to former Heal’s director John Harris Heal. Patented in 1860, his Sommier Elastique Portatif sprung mattress was a hinged design that could be folded into three parts and proved so popular that it stayed in production for over a century. Innovative in their day, coil mattresses marked a major step forward from straw or even feather filled beds. Yet fast forward over 150 years and the basic design remains the same with two main types to choose from: Continuous coil mattress: made from a single piece of wire that is looped into shape Open coil mattress: contains a number of single springs held together by a wire frame Find out more about Heal's Heritage Don’t be foiled by coils The saying goes that “if it ain’t broke, don’t fix it”. Yet when it comes to coil mattresses, this is one design that has definitely outstayed its welcome. Being a mass-manufactured design, it’s no surprise that coil spring mattresses took off during the industrial revolution and likewise became increasingly cheaper both in terms of their production and quality. The fundamental problem with these mattresses is that the springs move as one unit. This is quite literally a nightmare for those who share a bed with a partner as you're more likely to be disturbed by their movements during the night and the coils tend to wear out more quickly meaning you will start rolling together. Due to the inexpensive nature of coil mattresses, often they are filled with equally poor materials. Natural fillings are preferable as they provide superior long lasting support, such as horse hair which provides added bounce, and are more breathable meaning you won’t overheat during the night. Read our guide to getting the perfect night's sleep The power of pocket sprung Of course, you’d think with so many drawbacks someone would have come up with a solution sooner. Well in 1900 English born engineer James Marshall did just that by creating the world’s first pocket sprung mattress. A true revolution in terms of comfort and support, pocket sprung mattresses contain a number of individual springs, each of which is fine tuned to a specific tension (this will depend on the specific mattress) and encased within individual fabric pockets – hence the name pocket sprung. Key to pocket sprung design is that each spring is able to move independently from one another ensuring more evenly distributed support across the body. This also means less disturbance from a partner when they move with the difference between each of our counteracted by the separate supportive springs. See how our Pocket Sprung Mattresses compare We rest our case Given the weight of evidence listed above, you won’t be surprised to hear that Heal’s did away with Victorian designed coil springs long ago replacing them with modern pocket sprung or latex and memory foam ranges. Handmade in the UK, all of our mattresses are filled with only the finest fillings to provide a supportive, temperature regulating and entirely sustainable sleep. So if you’re on lookout for a new mattress, remember to avoid the dreaded coil springs by heading over to Heal’s to see how our luxury mattresses compare. Shop Sleep Back to top
    • Add A Boutique Vibe To Your Bedroom
      Latest Trends
      Add A Boutique Vibe To Your Bedroom
      If you can’t get away for much of a holiday this summer or you just think that your room could do with a much needed face lift. We have decided to put together a few ways that you could turn your bedroom into a more luxurious and glamorous room. Maximising comfort for that much needed rest you need. Bedding I imagine the first thing most people do when they enter a hotel room is fall straight on the bed, diving into a sea of puffy duvets and pillows. White linen in particular is great for establishing a calm and relaxing environment. Create a seating area A great place to get ready for the day ahead or even a night cap or a read of a book before bed. Stylish furniture creates a sense of allure within the bedroom. The room doesn’t become so focused around sleep but rather a place for a chill out. A luxurious throw? We reckon that your bedroom could probably do with a little extra attention and care. So one thing simple thing to do to give your bedroom a different feel is to put a throw over the bed or a chair. An extra little bit of luxury won’t go amiss. It adds an aura of calm and comfort to the bedroom. Your bedroom could probably do with a little extra attention and care. Lavish lighting Bring your bedroom lighting up to date. Ditch the oversized bed lamps and get some more nifty, flexible lighting so that bedtime reading can be a joy rather than a chore. Hotel Boutique rooms are always very well lit, there’s flexible lighting to satisfy all your needs whether it’s next to an arm chair or on a desk. Ashfield Mattress Above all the reason why you often feel so refreshed from a holiday is that you have slept well! The best way to go about that is getting a new mattress for your home and make sleeping enjoyable again.