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King Size Firm Foam No Roll-Together Mattresses

A firm mattress is a firmness that offers very little give or sink, providing a very supportive sleeping surface and distributing your body weight more evenly than softer mattresses. Firm mattresses are perfect for front and back sleepers.

Generally, foam mattresses are lightweight and easy to move and can be a good option for people who prefer a firmer sleeping surface or who need extra support for their back or joints

Each spring moves independently, preventing sagging or dips over time.

Shop mattresses from big brands including Sleepeezee, Silentnight and Giltedge. Choose from pocket spring, memory foam, hybrid and natural fillings options, available in every UK size. Selected mattresses include a 60-night trial, with free next-day delivery on orders over £299 and removal of your old mattress if required.

Mattress FAQs

Everything you need to know before you buy

What mattress firmness is right for me?

Firmness depends on your sleep position, body weight and personal preference. Side sleepers generally suit a softer feel as it cushions pressure points at the hip and shoulder. Back sleepers do best with medium to medium firm — enough support to keep the spine aligned. Front sleepers need a firmer surface to prevent the lower back dipping. Heavier sleepers tend to need a firmer mattress as they compress the layers more.

How long should a mattress last?

Most mattresses last between 7 and 10 years with proper care. Higher quality pocket sprung and latex mattresses can last 10 to 15 years. Signs it's time to replace yours include visible sagging or lumps, waking with aches and pains, or simply not sleeping as well as you used to. Rotating your mattress regularly helps extend its life significantly.

What's the difference between pocket sprung and open coil?

Open coil mattresses use a single connected wire system — less expensive but more prone to motion transfer. Pocket sprung mattresses have individual springs each sewn into their own fabric pocket, so they respond independently to movement and weight. This means better support, less partner disturbance, and a longer lifespan. Pocket sprung is generally the superior choice for most sleepers.

Is memory foam good for back pain?

Memory foam can be very effective for back pain as it contours to the body's natural curves and distributes pressure evenly. However, if you need firm spinal support, a medium-firm pocket sprung or hybrid mattress may work better. It depends on the type and cause of your back pain — our mattress quiz can help match you to the right choice for your specific needs.

Do I need a specific mattress for my bed frame?

The most important thing is getting the right size. Most mattresses work with most frames. The exception is slatted frames — if the slats are more than 7cm apart you may need a sturdier mattress or a slatted base insert. Divan beds with a platform top provide the firmest, most even support and suit any mattress type. Adjustable beds require a specially designed flexible mattress.

What does spring count actually mean?

Spring count refers to the number of individual pocket springs in a king size mattress. Higher count generally means more targeted support — but it's not the only factor in quality. A 1,000 spring mattress from a reputable brand will often outperform a cheaper 3,000 spring mattress. The gauge of the springs, the fillings above them, and overall build quality matter just as much as the count.

How do I know if my mattress is too soft or too firm?

A mattress that's too soft will cause you to sink and feel unsupported — you may wake with lower back aches or find it hard to change position. One that's too firm creates pressure points at the hips and shoulders, especially for side sleepers. Ideally your spine should be in a neutral position — not bowed downward or arched upward — when lying in your normal sleep position.

What size mattress do I need?

The right size depends on your bedroom dimensions, whether you sleep alone or with a partner, and how much space you personally need to sleep comfortably. A double (135 x 190cm) is the most popular choice for couples in smaller rooms. A king size (150 x 200cm) gives noticeably more width and length and is worth the upgrade if your room allows it. A super king (180 x 200cm) is ideal if space is no object. For a single sleeper, a small double (120 x 190cm) gives room to stretch without taking up too much floor space.

What's the best mattress for couples?

The ideal couples mattress minimises motion transfer so neither partner disturbs the other. Pocket sprung mattresses with a high spring count (1,500+) are excellent for this as each spring reacts independently. Memory foam and hybrid mattresses also absorb movement well. If you and your partner prefer very different firmness levels, a zip and link mattress lets you join two mattresses together — each person gets their preferred feel.

How do I care for and maintain my mattress?

Rotate your mattress 180 degrees every 3 months for the first year, then every 6 months after (unless it's a no-turn model). Use a good quality mattress protector to guard against moisture and staining. Vacuum the surface regularly to remove dust. Allow your mattress to air periodically — pull back the covers for 20 minutes each morning before making the bed.

What is a king size?

A king-size provides more width than a standard double, offering additional comfort for couples who need more room to sleep comfortably.

UK King Size Dimensions

Width: 150 cm (5FT)
Length: 200 cm (6FT6)

A king-size is a popular choice for those who want more sleeping space than a standard double but may not have room for a super king. It balances space, comfort, and suitability for various bedroom sizes.

What are the benefits of a king size?

A king-size offers several benefits, particularly for those who value space and comfort in their sleeping arrangements. Here are some of the main advantages:

Benefits of a Kingsize

1. Ample Space:

A king-size provides plenty of room for couples to sleep comfortably without disturbing each other. This is especially beneficial for those who are restless sleepers or have different sleep patterns.

2. Comfort:

The larger sleeping area can contribute to a better night's sleep, as individuals can stretch out and move around freely.
Ideal for taller individuals who require more legroom.

3. Family-Friendly:

Perfect for families with children or pets who like to join in bed. The extra space accommodates everyone without feeling cramped.
Useful for parents who co-sleep with young children or need space for kids who occasionally join them during the night.

4. Aesthetics and Luxury:

A king-size can make a statement in the bedroom, adding a touch of luxury and elegance.
It can become the focal point of the room, enhancing the overall design and atmosphere.

5. Health Benefits:

Reduces disturbances from partner movements during the night, leading to improved sleep quality.
Provides more options for comfortable sleeping positions, potentially reducing back and joint pain.

6. Versatility:

More flexibility in sleeping arrangements, such as adding extra pillows or sleeping diagonally.
Can accommodate a variety of activities beyond sleeping, such as reading, watching TV, or working on a laptop, with plenty of room for pillows and blankets.

7. Resale Value:

Investing in a high-quality king-size can potentially increase the resale value of your bedroom set if you ever decide to sell it.

8. Shared Bedtime:

Provides space for couples to engage in activities together, such as watching movies or reading, without feeling cramped.

Overall, a king-size is an excellent choice for those who prioritize comfort, space, and luxury in their sleeping environment.

Who should buy a king size?

A king-size is a great investment for anyone who values space and comfort in their sleeping arrangements. Here are some specific situations and types of individuals who might benefit most from purchasing a king-size:

1. Couples:

Couples who prefer more personal space while sleeping can greatly benefit from the extra width of a king-size,
Those who experience sleep disturbances from their partner’s movements will appreciate the reduced motion transfer in a king-size.

2. Taller Individuals:

People who are taller than average may find that the additional length of a king-size offers more legroom and comfort compared to smaller sizes.

3. Families with Children or Pets:

Families who co-sleep with young children or share with pets will appreciate the extra space a king-size provides, allowing everyone to sleep comfortably without feeling crowded
Parents who occasionally have their kids join them for nighttime comfort or morning cuddles will find the space accommodating.

4. Individuals with Health Concerns:

People who suffer from back or joint pain may benefit from the ability to spread out and change positions easily, which can help reduce pressure points and improve sleep quality.
Those who require additional pillows or sleep aids for conditions such as sleep apnea may find a king-size more accommodating.

5. People Who Enjoy a Luxurious Sleep Environment:

Individuals who prioritize luxury and aesthetics in their bedroom will appreciate the king-size's ability to serve as a statement piece, enhancing the room's overall design and atmosphere.
Those who enjoy a hotel-like sleeping experience at home will find the king-size’s spaciousness appealing.

6. Active Sleepers:

People who tend to move around a lot during the night will appreciate the extra space to stretch out and shift positions without disturbing a partner.

7. Homeowners with Large Bedrooms:

Those who have a large master bedroom will find that a king-size fits proportionately, providing ample space for the bed and other furniture while maintaining a balanced aesthetic.

Conclusion

Overall, a king-size is ideal for couples, families, or individuals who want more space and comfort in their sleeping arrangements. It provides an excellent balance of luxury and functionality, making it a worthwhile investment for many people.

Are there any different references used for a king size?

Yes, the term "king-size" can have different meanings depending on the region and specific variations. Here are the different references and types of king-size commonly found:

Variations of King-Size

1. Standard King (Eastern King)

Dimensions (U.S.): 76 inches wide by 80 inches long (193 cm x 203 cm)
Use: This is the most common king-size in the United States, providing ample width for couples who want more space than a queen-size bed.

2. California King

Dimensions (U.S.): 72 inches wide by 84 inches long (183 cm x 213 cm)
Use: Popular on the West Coast, the California King is longer but slightly narrower than a Standard King, making it ideal for taller individuals.

3. UK King

Dimensions (UK): 60 inches wide by 78 inches long (150 cm x 200 cm)
Use: The UK king-size is slightly smaller than the U.S. king, but larger than the UK double, offering more space for couples in the UK.

4. UK Super King

Dimensions (UK): 72 inches wide by 78 inches long (180 cm x 200 cm)
Use: The largest standard size in the UK, providing ample space for couples who want the ultimate in comfort.

5. Split King

Dimensions: Typically the same as a Standard King but divided into two twin XL mattresses (each 38 inches wide by 80 inches long)
Use: Allows for different mattress firmness or adjustable bases on each side, offering individualized comfort for couples.

6. European King

Dimensions (EU): 63 inches wide by 79 inches long (160 cm x 200 cm)
Use: Slightly wider than the UK king, the European King is common in mainland Europe and provides a comfortable option for couples.

Conclusion

When choosing a king-size, it's important to consider the specific dimensions and regional standards that apply to ensure it meets your needs and fits your space. The various king-size options provide flexibility and customization, allowing you to select the best option for your comfort and room layout.

What are the disadvantages of a king size?

While a king-size offers many benefits, such as increased space and comfort, there are also some potential disadvantages to consider:

Disadvantages of a King-Size

1. Cost:

Higher Initial Investment: King-size and their associated bedding, such as sheets, duvets, and mattress protectors, are typically more expensive than smaller sizes.
Maintenance Costs: The larger size may lead to higher costs for cleaning and replacing bedding and mattress accessories.

2. Room Size Requirements:

Space Constraints: A king-size requires a larger bedroom to accommodate its dimensions comfortably while leaving enough space for movement and other furniture. In smaller rooms, a king-size might make the space feel cramped.

3. Mobility and Handling:

Difficult to Move: King-size can be heavy and cumbersome, making them challenging to move or reposition, particularly if you are relocating or redecorating frequently.
Assembly: Assembly can be more complex and time-consuming compared to smaller sizes, requiring more effort to set up.

4. Cost of Accessories:

Bedding Costs: King-size bedding, including sheets, comforters, and mattress protectors, is often more expensive and may require special sizes or custom options.
Storage: Larger bedding and accessories may require more storage space when not in use.

5. Room Layout:

Limited Flexibility: In smaller rooms, a king-size can limit your options for arranging other furniture and might restrict the flow of movement within the room.
Visual Balance: In a small room, a king-size might dominate the space, affecting the overall aesthetics and balance of the room.

6. Heat Retention:

Warmth: Larger sizes may retain more heat, which can be a disadvantage in warmer climates or for individuals who prefer a cooler sleeping environment. However, this can also be mitigated with appropriate bedding.

7. Comfort and Use:

Space vs. Intimacy: While the extra space can be comfortable, some people may prefer a smaller size for a cozier or more intimate feel, especially if they like to be close to their partner during sleep.

8. Maintenance:

Mattress Maintenance: A larger size can be harder to clean and maintain, especially if it becomes stained or needs to be rotated or flipped regularly.

Conclusion

A king-size provides substantial benefits in terms of space and comfort, but these advantages come with some trade-offs, including higher costs, space requirements, and practical considerations for handling and maintenance. Assessing these potential disadvantages in relation to your specific needs and room size can help determine whether a king-size is the right choice for you.

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King Size Firm Foam No Roll-Together Mattresses

Giltedge Beds Sicily 1500 Mattress

What is a king size?

What are the benefits of a king size?

Who should buy a king size?

Are there any different references used for a king size?

What are the disadvantages of a king size?

Question not here?